How to improve a 2170 to a 2250+?

I took the March SAT (my first one) and scored 750CR 700M 720W with a 10 essay. I really would like to receive a 2250 or higher when I retake in October of my senior year. How should I go about studying to do this? I already studied and practiced quite a bit for months to get the score I did. In what ways specifically could I boost my score 80+ pts?

Lots of current threads on this topic, take a look and see what you think, post back if you still have questions.