Should I retake SAT II for better score?

<p>I got a 730 on my SAT Chem. Should I retake it and try to get above 750? Or is it good enough? I already didn't know some of the questions and was short on time on this one, but I want to go to Caltech, so I know I need pretty high scores. I don't know whether to retake it or wait and take the Physics one at the end of this year - I am currently taking IB Physics, first year - and hope for a higher score on that. I can't decide what to do! What do you guys think?</p>

<p>If you have freetime, and think it won’t be waste of money, study and get 750+</p>