I wouldn't think taking introductory calculus at college is any better than taking AP. Actually, you'll probably learn more if you do AP Calc BC. The course doesn't make the artificial disconnection between integral and differential calculus that most colleges do, and it's geared towards 'elite' students, unlike Calc I & II. The only way it would be better at college is if the professor were far better than the teacher. Having been the TA for Calc I, II, and IV, I can say that the AP approach to calculus is superior.
On the other hand, AP Chemistry is severely lacking in certain areas like organic chemistry. You'd be far better prepared for university if you managed to do IB Higher Level Chem or possibly took 1st year chem at college. If you just want to go to an elite university though, AP Chem will suffice =).