Heres the gear I recommend: (I play high school varsity)
helmet: pro 7 (looks badass too)
gloves: mac daddys, kings, nike elites
armpads: k18 or anything really, the size depends on the position you play
shoulderpads: cells, k18s, anything
you should also get some rib pads if your going to be playing attack or middie cause shit hurts
You should research some lacrosse heads online before you but one because theres a lot of different types. Heres some factors that affect what type of head you should get: strength, width, and weight. This all changes depending on what position and level that you are playing. Just buy the lightest shaft you can find, probably a warrior krypto pro diamond or some shit. Good luck man