Next school year I’ll be a junior and I plan to double up on AP chemistry and AP physics 1, would this manageable? Along with physics and chemistry, I would be taking:
•AP Language/Composition
•AP Calculus AB
•Honors Spanish 3
•AP United States History
Yes, it’s manageable
Sounds like your almost taking my same schedule for next year.
Yes, definitely manageable. Just be diligent about studying. 
I took AP Chem and AP Physics I as well as AP Physics II, AP U.S History and AP Language junior year.
That schedule doesn’t seem overwhelmingly burdensome at face value, although the teachers at your school may vary.