Predent Advice for a friend?

This is not on my behalf (I want to be nurse), but for a friend. He’s wondering if this is a good schedule for preparing for predent, but more importantly, he wants tips.

(Please move this to the proper category if it’s in the wrong place)

junior:
APUSH
AP Bio
AP Physics 1
APUSH
AP Psychology
Algebra II (he’s debating between HNs or nonHNs)
Dental Careers I

senior:
[dual enrolled Pre Cal over the summer]
AP Lit
AP US Govt
AP Chem
AP Physics II
AP Calculus BC (he wants to swap this out for Astronomy; I did ask “Why not use your free period?” and he said he really wanted a break.)
Dental Careers 2
Free Period

He was wondering if these classes [the science and math classes specifically] would be a good place to start for dentistry, or if he should take different classes and would like some pointers for which is better suited.

Secondly, he’s pretty desperate for what he should to get into dentistry, what majors are good, etc. etc.
He did Google some things, but he’d still like some anecdotes from people.

Thank you very much!