what should i do

hey guys i am a warrent oficcer 3 andi have m1 firebird m1 freeze m1 izida m1 smokey and a couple and viking m1 hornet as well and wasp and i have 39k crystal and im notsure what to buy my style of playing is always attck i always go for the flag or for team deathmatch i rush idk what to do plz help when i find out what to buy i will buy it on new years sale plz help me out