I think your GPA and GRE scores are good. I don't think you need to worry, especially because you applied to 4 different schools. Maybe try to find a one-on-one aide job or work as a SLPA and e-mail the school that you are working in the field and to please add it to your application. Also, meet with them in person (if you live close enough) and ask the coordinator how you stand. I did that because I was really worried and it helps them put a face with your name and shows you are really serious. I got accepted to the one school I applied to in California and my GRE score and GPA is very similar to yours. Good luck!