Lane, we homeschooled our kids so there was no such thing for us as IB, AP, etc. But, at age 16, ALL my children matriculated at the local U for things that were hard to teach at home (Labs especially). When they "graduated" high school, all had 40+ college credits. Other than to explain to the ALO what their HS curriculum was all about, there were no questions about the soundness of dual-enrollment. Also, remember, you are getting real college credits, a real grade, taught in a real college by a real college teacher, with real college students as your peers.
One thing, do not necessarily expect to validate Chem, Calc, Physics, etc. at USAFA just because you took that class at Local CC or even local U. Sometimes your best option will be to "retake" such courses at USAFA.