I completely agree w/you, when we get accepted to competitive schools, it's a double edged sword. You work twice as hard and don't always get that A, so I can empathize. Sadly, this is a numbers game. Someone who went to a state school for their pre reqs, might have a higher gpa than you, and hence have a better chance at dental school. You mentioned that you're taking grad classes, that ought to help your gpa. I'd suggest calling and checking w/NYU periodically, just so they have your name in their minds...who knows it might do the trick. Tell them how committed you are to getting in, etc.