There's a statistically small chance of improving your scores... probably better off focusing on SATII. My son scored in that range so he had the same dilemma.
If you're trying to get into something like MIT or Stanford where only 10-20% of all applicants are accepted then little niggling things can matter.
With so many applicants, you can walk on water with your stats and still not get in.
Little known is that if you go to another decent university and do well in your classes you can wiggle into those lofty places as a transfer student -- often much more easily.
Also keep in mind that the name of a college really loses its significance in your degree after a few years once you accumulate practical experience. If you're going for a MS/PhD, ymmv....
