While I’m not an expert, I’ll give you my 2 cents.
For raiding/farming, I like to use this build with a Monk/Raider COM (+6 Money Shot) and an empty shield. Main drawback will be the ammo consumption, Interfacer and all this fire rate will chew up your ammo specially during longer fight. But if you are lucky enough, you will be able to get some Money Shot chain if Inconceivable kicks in at the right moment.
If you can’t get a kill to trigger Lay Waste I suggest you to move those points into Divergent Likeness or All I Need Is One, it depends what you prefer, more accuracy or more dps.
For the gear, even if it’s not mandatory, I would highly recommend to put your hands on a Lady Fist. A Trespasser will make your life easier if you want to fight Pyro Pete and Vorac. A good slagging tool, like the Magic Missile, or a Bonny can help you for slagging more consistently. On another hand a Chain Lighting is super helpful to regain his life in a blink.