Your chances are good at the AZ schools. Get to 200 hours of the food bank by the time you submit the application. Consider trying another activity as well though, especially if you don't need to be an MCAT tutor. Examples include homeless shelter volunteering, working with foster youth, working with refugees etc.
I would suggest:
UA-Tuscon
UA-Phoenix
Mayo AZ
SLU
Creighton
Colorado
Keck
UVA
Western Michigan
Dartmouth
Case
Ohio State
Cincinnati
Pitt
WUSTL
Vandy
Duke
USF
Miami
Hofstra
Rochester
Einstein
Sinai
NYU
Jefferson
Baylor
UTSW (these two like high stats students for OOS)
Iowa
Tufts
Emory