You don't need to get the tornado grenade for one...
for camo... I'd recommend flecktarn..its easy to find, cheap and is effective as hell. For a vest, i'd recommend getting something modular... which'll give you a lot of options for gear layout. A CIRAS or replica Eagle-PC should do the trick.
Both the guns you have there should be fine.. but it doesn't really matter since... like the other guys said... you need to be 18 to actually get one.
Guardians of Asgaard - KF25 -
Primaries: LCT AS VAL, LCT AKS74UN, VFC M4 CQB Mk2
Secondary: Latino heat, TM Glock 17