Beyond 8 AP classes, there is not much of a benefit to taking more AP classes. All that matters is if your guidance counselor checks how the “most rigorous course load” box on the common app. Taking both AP Chem and AP Physics will be a huge struggle, especially alongside BC Calc. I’d suggest dropping either AP Chem or AP physics. Also, for subject tests I don’t recommend taking more than 2 or 3 tests. Too many subject tests will make admissions officers think you have nothing to better to do on a Saturday. Take the test after you have glean the corresponding AP course (although the physics test usually does not match the ap curriculum).