It depends on what your target score is. My comp. was only 27 because I did exceptionally terrible on the science.
The only thing I did the night before was to get plenty of rest and not worry about it. If you want to brush up, I heard the prep guides can be pretty helpful though.
The only thing I bombed was science, math I did average enough to test into 107 here, and reading and english I aced.
I wouldn't worry though, and good luck to getting what you're after, I'm sure you'll be fine.
