<p>I think you have a good chance for most of them, especially given your age. But with HYP and Stanford the selection can be quite random, I mean I can imagine those guys at the admission office playing darts using student profiles as their targets, because most of the applicants are so darn qualified, that is obviously after they get rid of the lesser applicants. </p>
<p>Who knows? apply and see. Good Luck</p>