Would it look bad if I dropped a class from my senior year schedule?

Yes, get rid of AP Comp Sci (unless you want to be a comp sci major, …then maybe drop AP govt or something.

What do you want to major in? What are your SATs?

You are correct that college apps takes time…plus your ECs and what not.

I would also look at potential colleges of interest and see what courses you could get ap credit for…
Does the colleges make you take a foreign language? If so, then the AP test may place you out.
But if you have no interest in furthering a foreign language then you could ask if you want to take AP Spanish.