given your gpa i think you have what it takes for a 510+ mcat. you will be fine for DO given your gpa if you get 505 + to the established DO programs, which you definetly want to get into rather than the newer ones. I don't know what your study materials are but Khan academy and kaplan for science, the 98 page document for psych/soc, and mcat qpacks and SB's are the best to help improve your score.