Do I need to retake?

I took Bio M and Math II. I got a 770 and 780, respectively. I am planning on applying to all the “elite” schools; HYP, Penn, Stanford, etc. do you think I should retake to try for an 800? I know this may sound ridiculous but I heard about so many people getting an 800 on both and got a little worried, plus the curve is so generous and the rest was so easy that I am unsure of whether a 770 and 780 are that impressive. Any thoughts?