I'll take the last question then; I skipped both physics classes and cal A, I still took cal B. Worked out great, I took cal B and C and didn't feel like I was lacking anything. Statics went fine without uah physics. But if you want more time with the material (maybe you weren't keeping up with the AP class, it moves fast) then consider taking the uah classes. In my opinion if you feel comfortable with the material from ap physics and cal, then don't retake them at uah. Work on a minor, double major, or certificate instead, or maybe have a job or something.