I think it is tempting for new players, but stay away from high capacity magazines (300+ rounds). They rattle like tic tacs and the wheel is annoying. Go with mid caps or real/low cap mags and you will have more fun. I personally love the Magpul pmags but they are pretty hard to find now.
Check some of the sections on this site for general recommendations as there is a ton from what optic to use to inner barrels and hop ups. You just need to search and do some reading. Read lots.. not all advice is good, but the general consensus is typically reasonable guidance. Just be realistic in your expectations. Airsoft guns, and parts are more about disappointment than success.