Yup. MoN identified the only reservations that I have with such arrangements.

The credit one is a big, big deal, especially if it sets your DD up to be taking college mathematics as a high school sophomore. What we've found is that secondary math instruction gets progressively less competent as you go higher.

In other words, we've opted to 'stop' my DD at Algebra II because calc is likely to be a waste of time. I know other high-ability kiddos that have bailed on AP calc for similar reasons.

Schrödinger's cat walks into a bar. And doesn't.