There are some more things for him to think about for a physics major (also applies to engineering majors):
a. AP physics B, 1, or 2 will not give advanced placement for a physics major. (However, they would be decent high school physics courses; high school physics is sometimes listed as a prerequisite for college physics.)
b. AP physics C is not always given advanced placement, because (1) college physics may be more math intensive (particularly when covering E&M), and (2) college physics 1 and 2 may include topics other than mechanics and E&M (e.g. thermodynamics).
c. College physics 1 for physics majors usually specifies calculus 1 as a prerequisite, and calculus 2 as a prerequisite or corequisite. So a student who starts math in calculus 1 usually must wait a semester before starting the physics sequence. Physics 2 (which generally includes E&M) usually specifies calculus 3 (multivariable calculus) as a prerequisite or corequisite. A student who starts in calculus 3 will complete it the semester before taking physics 2, which can be somewhat advantageous when multivariable calculus is used in physics E&M.