Hi,
I can give you my opinion on this; however, it's just that--my opinion. If you are seriously interested in academia, another M.Ed is a waste of time. You need a doctorate to realistically pursue a career in academia.
As far as admissions, without knowing all of you stats, (and even if I did) it's impossible to say if you'd be admitted into a PhD program. My advice would be to contact professors of interest, network with people in the program, write a really good statement of purpose and hope for the best. It's my opinion that many schools, including high ranked schools, care more about your statement and the "fit" with a certain professor in the department.
My other thought is that if you are asking if you should pursue a PhD, are you really sure that's what you want to do? You're committed to 5-6 years of near poverty and overwork.
Hope this helps.
