AP literature test for hs senior after running start lit class?

My son took AP Language last year and got a 5on the AP test. He didn't like the AP lit teacher at the high school, so didn't take that class. He's taking a Running Start English class at the community college now. It's a 100 level literature class, and I feel that between his excellent writing skills and his lit class, he could get a good grade on the SO lit class, especially if he talked to his teacher and used the book I bought used that's on the College Board list of approved textbooks. He's probably going to a school that doesn't count Running Start classes as college credit. Should I encourage him to take the