Should I retake my SAT IIs?

I got a 680 in Literature and a 730 in Math 2. I was expecting math to go badly, but I prepared quite a bit for literature so I was really disappointed. Im giving my SAT 1 in november so I was planning on regiving these in december, but Im a senior and im just worried that Im running out of time.

If I get a 770/800 in SAT1 math would i need to give math 2 again or could I swing it? I am for sure giving lit again. The thing is im applying to competitive schools like UChicago, Northwestern, Brown, Tufts, UC Berkley and Im also an international student.
Basically how badly would my current scores affect my app? I know they look at it wholistically but scores under 700 are still bad even if lit is one of the harder ones right?