Chance Me - UMich in state

I’m going to be applying to the LSA. I am very nervous about AP Physics next year, but everyone in my school who takes full year physics struggles through it. Who knows, maybe I’ll like AP! I want to take it just in case I do decide to go into Astrophysics after all.
Also, my high school is very competitive and we do send plenty of kids to UMich each year. Is that going to help or hurt my chances?