Depending on what your school offers, I see no point in self-studying Calc AB. Especially if you can take Calc BC next year, which covers AB.
US Govt has a lot of teacher-student interaction; you’re probably better off taking the class. In most schools it’s considered a core class. Don’t self-study that one.
As far as what are good candidates for self-studying - Psych is probably worth self-studying for. Stats is another suggestion. Maybe MacroEcon and MicroEcon. There are others that aren’t worth it.