Precalculus is a key course. Do not skip; expect it to get hard despite original familiarity. If it turns out to be very easy without much work, use the extra time to develop ECs.
Btw taking calculus without precalculus is a bad idea but isn’t especially “impressive” for adcoms (precalc, a senior class, taken as a sophomore, is already impressive. To top that you’dhave to be a math genius who completed calc as a freshman with an A). Colleges’d rather have you do well (A) in precalc then in calc jr year