well, i'd definitely go do over sgu, especially since ccom is the school in question. ccom's been around for over 100 years and is very well-established. it has great facilities and is in a very livable area, and the biggest plus of all is that you do all your clinical rotations in the chicago area. ccom places less emphasis on omm than other osteopathic schools, so even if you're not interested in that, going to ccom wouldn't be a huge hindrance. also, the thing to think about when comparing ccom and sgu lists is that pretty much everyone who matriculates at ccom graduates and goes on to a residency. my strong hunch is that sgu is going to have more attrition.
if i weren't remotely interested in osteopathic medicine, and i had to choose between sgu and a school like pikeville or wvsom, i might pick sgu. with ccom, though, i think you'd be nuts to go to an offshore school.