Liberal arts isn’t really a subject, it’s more of an approach to education. I think you mean humanities and social sciences.
I can’t speak for what it’s like at your school but I’m pretty sure any schedule with more than three AP classes is bound to be pretty difficult. Definitely a competitive rigor but I hope you can handle all of that. In fact, how is it even possible to take that many classes?!?! It’s ok to not take everything at once, even if you love those classes.