My piece of advice is to listen to the Album "Kill 'Em All" tonight and before you leave in the morning. Make sure to listen to "Seek and Destroy" and "No Remorse" a few times each.
I did quite well on the SAT's, using this technique.
I also recommend leaving your calculator at home. SAT math is all about getting a crappy answer really fast. The calculator slows you down. (Verbal is too, but Math is more so).
Anyway, When I used the Speed Metal priming technique I finished every section of the test with time to spare. I took the PSAT at about the same time period (same month, I guess), did not "Metal-up" and I was much more sluggish, plus the score was 40 points lower.
As for studying for the SAT, isn't that what school is for?