Need an advice for my build

Hello! This is my build I am planning to use with One Pump Chump with infusion, phasezerker and insane reload speed.
My question is how to sustain myself. Is what I have specced into enough?
I specced into Samsara and health regen but I dont know what action skill+augment to chose for Samsara procs - you will see in the link, I dont have access to Fist over matter, so what else procs Samsara or is there a better skill?

ps. Im just lvl 15 still thats why i cant test and ask here

Personally I would spec into brawl and second in fists of the elements. Brawl doesn’t all have to be melee but I use shotty and melee for my build. It allows you to get into close quarters