@tohnicholas, i am just copying your setup and editing it for me.
My setup is for precision shooters and skillers.
Starters: M9 Barret, good if you can get crotch shots.
Side-arms: Magnum, BOOM, HEADSHOT
Close-range: Default shotgun, will kill enemies in only a few blasts.
Automatics: Precision Laser, great for criticals, allowing you to rapidly kill your enemies.
Long-range: Holy grail, instakill on any enemy without shield, excluding raze zombie..
Heavy weapons: Flamethrower, great damage, even after you are dead.
Explosives: Default rocket launcher, can kill any enemy without shield or adrenaline in one hit.
Ability: Teleporter, since it became available for credit buy, it can be helpful to warp away from an incoming rocket, or Katana, 3 abilities in one. You can cut enemies to pieces. You can use landmines (use it as you run over them), and you can reflect enemy attacks
Equipment:
Defensive: Adrenaline Boost, saves your live if someone shoots you with a rocket.
Utility: Power extender, allows you to have unlimited double damage.
Offensive: Extra clips, useful for weapons with low ammo, ex. holy grail.