diana.

After researching for places to take pre-requites, I landed on a nice surprise! University of Northern Colorado had a FAQ where they had listed places to potentially complete pre-requisites online. I thought I'd share as I know many of us are looking and it can be a real headache trying to comb through all the information. The FAQ was last updated in 2013 so I'm not sure how valid the information is but at least it gives you a list of potential schools to further look up rather than being on a wild goose chase.
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***The list provided below does not constitute a recommendation or endorsement of any of these programs and may not be comprehensive. It is provided for informational purposes only.
Eastern New Mexico University
http://liberal-arts.enmu.edu/health/cdis/online.shtml
 
Idaho State University
http://www.isu.edu/csed/progOpp/opp.shtml
 
Longwood University
http://www.longwood.edu/socialworkcsds/SLPonline.htm
 
LaSalle University
http://www.lasalle.edu/schools/snhs/pre_slp/
 
Red Rocks Community College
http://www.rrcc.edu/communication/index.html
 
Texas Women’s University
http://www.twu.edu/communication-sciences/5950.asp
 
University of Colorado at Boulder
 
University of South Florida
http://www.sarasota.usf.edu/academics/CAS/academics/nd_lsh.php
 
University of Wyoming
http://uwadmnweb.uwyo.edu/comdis/info.asp?p=12471
 
Utah State University
https://comd.usu.edu/htm/online-education/online-post-bachelors-degree
 
Western Kentucky University
http://www.wku.edu/chhs/cms/index.php/pre-slp//
 
Florida State University
https://commdisorders.cci.fsu.edu/academic-programs-admissions/graduate-prerequisites-bridge-program/
Again, this list is not comprehensive and if you have experience or know of other schools that offer online courses, feel free to comment below and I'll add it to this list  

I wouldn't bother getting RBT certified unless it would give you a pay-increase at your job. 
Like AspiringSLP2be said, it's nice to have on your resume but it's just a title - it doesn't define your actual skills aside from the fact that you completed the hours and passed an exam for the certificate. 
I'm not RBT certified and I have been an ABA therapist for a year and a half now. It doesn't make me any less of a therapist compared to someone who is certified. If my job offered to pay me more for the certificate, I would do it. The amount of knowledge and experience you get as an ABA therapist will definitely change the way you view the field.
At the end of it, I really think it matters on your experiences and how you express them in your SOP, not just the title. 
 

Most people say that 3500 is easy, but my dialect made it incredibly frustrating. I don't think of myself as having a particularly strong New England accent but it's different enough from the textbook author's that I struggled with getting the "correct" answers. Ugh!
I took 2500 and 3100 together and thought that was a good combo. My 2nd semester I took 5900 and 3400 and thought that was also a good combo. 3100 is all exam-based and 3400 is mostly exam-based (there is one group paper and the optional-but-worth-doing model of the middle ear project). 2500 has tedious short answer questions each week and 5900 has weekly simulation writeups plus the observation reports.

Most schools will be honest if you ask them if you're competitive.  I typically take off the programs that aren't straightforward or won't provide me with enough answers. 
Some questions I asked the schools or acquired from their website:
1. Requirements/pre-reqs to apply to the program (Bachelor's degree, classes required, etc.)
2. Application seasons (some schools will offer spring or summer application cycles)
2. How many students were accepted last year and how many of them chose to attend it?  How many of those seats are from CD majors and out of field?
4. How many students applied to last year's application cycle and how many were accepted total? (To calculate the acceptance rate.  Note some some schools will be kind enough to offer you this information on their website.)
5. Are GREs and any other standardized testing required?  Does the school have a minimum GRE requirement?  What is the average GRE score of accepted applicants?
6. How does the school calculate your GPA?  Do they only look at your overall GPA or your major GPA?  Do they look at all your units or the last 60-90 units?  What is the average GPA of accepted applicants?
7. How many out of state students did you accept last year?
8. I didn't ask this question, but you can always ask for more information regarding their scholarships and how they fund their students.  This is great if you want to attend a school that may be out of reach for you because of financial reasons.
Since I'm more interested in clinic work than research, I looked for any specialized programs or clinics by going through the schools' clinic websites and reading the forums.  I made little notes to myself on my excel spreadsheet on my first impressions of the schools according to their websites, although if you can personally visit those schools I highly recommend that you do so.  I was able to visit many of the schools in my home state, but sadly couldn't do the same for my out of state schools.  I hope that helps!  

Florida State University offers a Bridge Program. I completed my prerequisites through them, and loved it!

I agree with @RMott that you do not need a post-bacc. I got into four-leveling master programs (including U of A) where I do not have to reapply for admission to the masters after finishing the pre-reqs, with a 3.52 GPA and a V160, Q155, and AW4.5. I had 25 hours of observation of a bilingual SLP (no letter of rec or anything though, just mention of it in my SOP). And I got full funding at one of the programs. I´m not trying to be vain, just let you know that you can do it without the time and $$$ of a post-bacc. 
If you have strong numbers (they don´t even have to be stellar - mine weren´t) and you can write a really strong SOP you have a good chance. I don´t think you need experience as an SLPA - in fact, it is not really a "stand out" experience that will help your application jump out. It doesn´t even seem like you´ll need observation hours given your personal introduction to the field, but they might not be a bad if you have time. 
Something else I did to sort of "hedge my bets" was enrolling in USU´s 2nd degree program. I had finished three courses when I applied (which also let me apply to even more leveling programs). I think this boosted my GPA and demonstrated my strong interest. Plus, if I hadn´t gone in I would already be started on Post-Bacc-Plan-B for the next year. Since I did get in, I have 3 less classes to take in my leveling track. Does that make sense? I´m not sure if I´m explaining it clearly. 
One other thing that I think helped me was really focusing my application and my SOP. I only applied to schools with leveling programs (obviously) and bilingual emphasis. I learned in depth about how each program was unique and the interests of the professors in the dept. I tried to include those things in my SOP and my interview. 
Finally, don´t underestimate the importance of good letters of rec. You should be cultivating those relationships now. Pick your recommenders wisely and strategically. 
I hope all that made sense and was at least a bit helpful. I´ve got more of my ramblings on my blog if you´d like to look them over. 
Best of luck! 
 
 
 

YAY ABA therapists! I currently work as an ABA therapist here in Texas! I've been working for a little over a year and have loved every minute of it (even on the rough days). I'm so thankful for my job as it has led me to SLP as a profession. I love my kiddos and they are what drive me to continue to persevere through another round of applications! As a lot of posters above me have stated, ABA is not for everyone but it could also lead you down another path to pursue a BCBA instead.
People experience different things with ABA so I can only tell you a bit of what I've gone through! I've been spitted at, hit, kicked, hair-pulled, and had a chair thrown at me. All these behavior episodes fade in the back when I've seen the progress my kids have made. Literally my kiddos have so much potential just locked inside and I love being able to see them blossom. I've also had the opportunity to observe countless speech sessions and continue to grow more in love with the field. 
There is a need for SLPs who have experience with autism because I've seen so many SLPs come through and are just unprepared when dealing with my clients. One behavior episode and they are running for the hills! lol 
Anyway, not trying to scare you away - just not many people will tell you about the challenges of the job and I prefer to be straight-forward. Again, ABA isn't easy - but it definitely is rewarding in every way and will shape you into a wonderful SLP.  

I know, it makes me worried that I got rejected or something  Praying we both hear good news soon!