What are my chances of getting into these colleges?

You're on the right track and doing all the right things, but don't start freaking out about it quite yet -- you have plenty of time. It's going to be hard to tell without SAT scores and junior year grades. Make sure that you study hard for those.

Doing summer programs is exactly what you should be thinking about. They will also give you a really good idea if that school is right for you.

Remember, college is a match to be made, not something that you win. Don't be afraid to talk to some current students when you visit and make sure that you feel at home where ever it is that you're going. What you do at a college matters a WHOLE lot more than what the name of the school is. Someone who buckles down at a less prodigious school is going to do a whole lot better in the real world than somebody who slacks off and only parties at a really good school.

It looks best when you do well in AP courses. However, if you can't handle it and don't do well, it will end up looking worse for you than if you had done excellently in the regular courses. But, if you can't handle that course load, then MIT is probably not for you.

Unless your SAT scores are much higher than your PSAT scores, you probably won't get into MIT, Hopkins, Yale or Cornell. The competition is just too strong. Your chances are much better at Drexel, Pitt and Penn State. (I'm surprised that Carnegie-Mellon isn't on your list, although they don't have much of a campus.) Your engineering project sounds interesting and if it's successful, it might be the kind of thing that could make a difference in your admission. Are your engineering friends planning to apply to the same schools? Too many applicants from the same high school might mean that some of you won't get in.

You never know. You have good records, but YOU CAN NEVER BE SURE. NEVER. There is no cheat sheet. You just have to apply, be honest with them and with yourself, and hope. So, you are more likely than some to get in, less likely than others. That's all you can get from us, because there is no other answer.

The biggest thing: Be honest with them and with yourself. Don't fudge anything to 'make yourself look good.' You don't know what they want. You THINK you know what they want, but you don't know. Be yourself, and you'll find a school you are happy at. That's it.