Clinical opportunities don’t have to be just at hospitals. They can be at private practices as well, and I’m sure there’s plenty of places you can shadow around there.
If you are worried about resources, both schools have plenty of resources that will help you develop professionally and personally and get into med school. It will be just how you use those resources. Seems like Umass would be a better choice for you since it’s cheaper and location might be nicer
My university had plenty of hospitals nearby, but I never used them because I found other clinical opportunities.