AEP 1911's are slightly fatter than real steel so it can fit the gearbox. So if you have a dedicated 1911 holster, it won't fit.
Cyma AEP Desert eagles are great, they seem to have a greater rate of fire than other models for some reason.
Leave the optics until later on, but good choices so far. Molle vests are pretty cheap so I'd recommend getting a plate carrier and some M4 magazines pouches.