Take Physics Honors and AP chem in the same year?

Should I take AP chem and Physics honors in my junior year or do you think that it would be too much?

It’s not an insurmountable workload, but it also depends upon what other classes you are planning. Additionally, if you are targeting top colleges, you should not double up on a science if it will be at the expense of another core subject.

I would be taking

AP Chem
Physics Honors
BC Calc
German 4
English Honors
Advanced Computer Science AB
AP US History

OK, it’s balanced - that’s good. Then it just goes back to a comment I made on your other thread: whether the student can handle 4 AP classes is something only s/he and maybe the parent(s)/GC can answer. Some students do fine with 4, while other struggle with one.