What are my chances of getting into these colleges?

what were your scores on the AP tests for those courses? I think you have a really good chance of getting into all those school just on your grades and scores, but the extra-cirriculars put you over the top I'd say take the ACT just for variety and based on your GPA you might do better on the ACT which is more knowledge based but your SAT's really are enough, make sure you apply for the Gate Millenium scholarship, you'd make an awesome candidate if you come from a disadvantage background. I'm sure you'll get plenty of school aid but this scholarship gives you a full ride anywhere so you'll get refund checks for the leftover amounts and not have to work to have spending money, more time for studies.