What more should I do for my SAT tomorrow?

I have taken a SAT Prep Course for about 6 hours from someone that use to help make the questions. I have the official SAT book which I have read some of and answered quite a bit of questions. The score I need is a 1270. I have taken the PSAT twice. The first time I did poorly. The second time I doubled my score, though it was still not equivalent to a 1270. I'm not the best test taker but I am very intelligent. I have had straight A's since I started high school and I am in 11th now. 4.2 Weighted GPA and a 3.93 Unweighted. Any words of encouragement or advice?