Hoping for Premed: AP Chem v.s. AP Micro/Macro

I’m a rising sophomore in an IB school, but I am self studying APs.

Do you think it will be better for me to take AP Chemistry or AP Micro/Macro for the 2018 exams?
I am more interested in chem, but I am also taking APUSH and AP Bio, and I think self-studying AP chem will be overdoing it.

What do you recommend?

You are not taking Chemistry through your IB program?

I am going to take IB Chemistry Hl

Why would you take AP Chem if you’re going to take Chem HL?
Note that your time would be better spent on activities you push to the max, rather than on self studying (colleges want you in class, participating, taking tests, not self studying.)