Which courses should I take junior year?

Hi all,
I am currently a sophomore who is looking to attend elite colleges such as the Ivies. Next year, I am planning to take Honors Precalculus, AP Chinese, AP World, and AP Language as well as orchestra as an elective. Should I take AP World and AP Language? Also, my upperclassmen friends told me to take AP Chemistry next year instead of AP Biology because I was planning to AP Chemistry senior year as well as AP Calculus BC, which they said was too much. Should I take AP Chemistry next year instead of AP Biology?