The AP Physics C curriculum, as it is structured, does not require knowledge of calculus beforehand. Concurrent enrollment with calc is fine. No need to accelerate your math curriculum solely to take AP Physics.
For admissions purposes, history and social sciences are lumped together. So no college will ding you for having taken econ instead of a history course, nor will any college give you brownie points for taking both econ and history. If you want to take a DE history class, by all means do so, but do it for the right reasons.