Sat Physics and Literature?

I took the SAT Physics test in June and got a 750 (I’m not sure if that’s good enough for Columbia/Cornell/uChicago/Northwestern). The October SAT is coming up, and I signed up for math, literature, and physics. Should I retake physics? Should I even bother taking lit? I got a 680 on a lit practice test, cold, so I’m sure I can raise it to a respectable score but I’m not sure if it’s worth the trouble.

TLDR retake physics and try literature or focus on college essays?