This really depends on what your major is, and what sort of AP credit or other credit you might have. Bio, Chem, English, and Calc is pretty generic. If you already have AP English and Calc credits, then that wouldn't apply to you. If you already have AP chem credit, then consider an upper-level inorganic chem.
If you're a language major, you probably need a language class. If you're a business major, you'll need a business class. etc, etc. Really, the best thing to do is to talk to an advisor in your major. If you don't have a personal advisor yet, send an email or set up an appointment with your school's premedical advisor.
I do agree with the above posters that two lab classes is very doable. I've had three at a time before, but you start to feel like your life isn't your own at that point.