What chance do I have to go to college in the US?

Well I don't know the statistics, nor do I know good back ups, but I am a pre-med college student at the moment in the US so I can give you some insight. The medical schools you mentioned are tough to get in to....real tough. Sometimes not even a 4.0 GPA and a high MCAT score is enough. It's crazy here. The average GPA a student admitted into a med school here has is 3.8, so there are plenty of 4.0's and the average MCAT score is 32 (it's been raised) so you can shine there. Apply to the pre-med colleges that you listed, but just know that there is a chance you might not get in (although your chances seem very high). But when all is said and done, it doesn't matter what med school you go to, you come out as a doctor regardless, and don't believe that only Harvard, Columbia, and Yale will make you a good doctor because that's not true. So I'll give you the same advice that was told to me: aim high, but do not collapse when something goes wrong. I too wanted a 4.0 (I'm a sopre now), and got 2 A-'s (which are different than A's at my college), so my GPA is 3.9 something. But I'm okay with it because I've been volunteering at a hospital, have been studying for the MCAT's, and trying to get close with my professors (remember they write your letter of recommendations). So I don't know if this helps, but it's some insight. Good luck.