Population of Miami: 5 million. Population of Chicago: 9 Million. So yes there are more people in Chicago, but if Scholl doesnt have the facility infrastructure to tap into that population it really doesnt matter. When you compare 2 small clinics (they are small, I have seen them) to 3 hospitals its simply not a contest because the "opportunities" of your school, as you put it, are limited to the connections your school of choice has established. I would not choose a school because you think that some opportunities will appear for you. Another factor is your class size. Scholl admits 100 students compared to Barry admitting 30. Clinical exposure is simply not comparable between these two schools. Well you could compare, but it is obvious Barry wins with clinical exposure and opportunity.
I would like to say that there are other things that Scholl has that Barry doesnt. Research opportunity is not great at Barry. There are more factors I wont go into here, but these two school are simply different I like both schools. Both are going to make you a great physician. I am simply pointing out the differences in clinical exposure. Choose the one that fits you best! good luck