I don't agree that we have "a lot more primary care weeks in their third year than most med schools", most schools seem to have similar core rotations and I think there are guidelines. 4th year is mostly electives with a little ER, FM and surgery specialty thrown in, but 3rd year is pretty basic:
UMDNJ - Geriatrics 4wks , Radiology 2-4wks, Psychology 4wks, Family Medicine 12wks (incl OMM, ambulatory, and hospital), Pediatrics 6wks, OB/Gyn 6wks, Internal Medicine 6wks, Surgery.6wks
NYCOM - Family Medicine - 6 Weeks, Medicine - 12 Weeks , Ob/Gyn - 6 Weeks, Pediatrics - 6 Weeks , Psychiatry - 6 Weeks, Surgery - 12 Weeks
NYCOM 24 wks primary care
UMDNJ 28 wks primary care
You will see similar schedules across the board, MD and DO.
Anyway, I would add PCOM-Georgia, NSU, PCOM, and UMDNJ to that list; I would replace OUCOM with DMU since OU makes you sign a 5 year contract on top of paying more tuition for out-of-staters (and DMU is a really cool place) to make 10. You may also want to consider LECOM-Bradenton if you like PBL and can deal with the strict policies instead of WV since WV charges 48k in tuition alone to out-of-staters. You may want to check out the other schools on the east coast like NY and UNE if they are for you.
Good luck