Should I retake the SAT or the SAT IIs?

I got a 700 on both the English and Chemistry SAT IIs, and a 1460 on the SAT I. I’ve taken each once, and am waiting on my scores from my second try at the SAT I.
I need to sign up to retake either of them before I get my scores, so which (if any) should I retake to maximize my chances for the most selective schools? I know I can’t guarantee acceptance, but I still want to give it my best shot.
Also, can I retake the other in December, or is that cutting it too close?

I’ll also add that I would need a lot of time to plan for the SAT IIs, because I am removed a bit from Chem. I would also like to take the US History SAT II, because I received a 5 on that AP Exam and feel reasonably sure about that topic.

You should contact the school to see whether they accept December result.