Of those applying through AMCAS in the last three years with your current GPA and an MCAT score of 35, 38.% received an acceptance, which includes those with significant modifying factors, so your chance is possibly less.
AMCAS will take out the grades for classes that were required by your graduate degree and will recalculate your GPA for application purposes. They will also give you a BCPM GPA (all Biology, Chem, Physics, and math classes). Perhaps you can tell us what these numbers would be using this spreadsheet:
http://medschool.ucsf.edu/postbac/pdf/AMCAS%20GPA_Calculator%20Version%204%20Final.xls so we can better assist you.
If you take the MCAT in August, your score won't come back for a month. September would generally be considered a late application. That is not a good time to apply if your application stats are subpar as your statistical chances of success will drop due to poor timing.
You also need to have all the usual ECs lined up before applying. Do you have community service, leadership, research, physician shadowing, and clinical experience?