Are you a TX resident?
If so, I've been showing TX applicants the average cGPA/MCAT for matriculated students:
1) Baylor - 73.4 (3.84, 35)
2) UT Southwestern - 72.4 (3.85, 33.9)
3) UT Houston - 69.3 (3.76, 31.7)
4) UT San Antonio - 69.1 (3.73, 31.8)
5) UTMB - 67.7 (3.87, 29)
6) TTU Lubbock - 67.5 (3.65, 31)
7) Texas A&M - 66.7 (3.66, 30.1)
8) TTU El Paso - 64.8 (3.6, 28.8)
9) TCOM - 64 (3.60, 28)
The above averages are slightly below MSAR's published averages, which are only the stats for accepted (not matriculated) students, just to get an idea of where you stand.
Your volunteering, shadowing, research hours look good. Any other EC's? Your
LizzyM would be a 65.2, which is only above the average LizzyM at 2 schools, but it's close enough to other schools for you to have a successful cycle I think, provided you apply early and have a good application otherwise. It helps that you already have your MCAT score, since applicants applying in the 2015-2016 cycle who have to take the new MCAT will receive their scores in June at the earliest, and TMDSAS opens in May. I suggest you apply in May and you will at least be complete before all those taking the new MCAT.