AP Lang is one of the easiest AP classes, but is the hardest exam. I just took the course last year and I get my score tomorrow.
My advice: practice the writings for the essay. you may not know the exact question, but you can help by using various strategies and terms you learn in the class. It worked for me. You will get some homework (mainly reading though, but there will be some writings)
Anatomy Honors (my favorite class ever!) complements AP Bio, because animal anatomy & physiology is a huge portion of the exam. and in turn AP Bio complements AP Environment (beyond easy, even compared to CP Environment) because of ecology, plants, animals, etc.
Precalc is easy if passed Geometry & Alg 2. The ending though will get you, but don’t be scared! It is to help you prepare for Calculus, so be on the ball and do the homework!! Good luck junior year!