With respect, I would not advise students looking to be competitive at top colleges to simply take what they are comfortable with. Those schools will want to see students who went outside their comfort zone and pushed themselves. This doesn’t mean students should stay in a class where they are completely overwhelmed. It may not be black/white.
I would say that OP should plan to take AP Calculus AB before graduation. Get tutoring or take enrichment classes to get yourself to that level.