Quote from BearbarianQuote from Ridiculousssi see you got alot of dexterity in you're build, it is a good thing no lie but you also need a decent balance of survivability. Without some resistance to all elements and some health you are as good as dead, does not matter if your damage is massive, You need to balance out the two.
And instead of companion i would use multishot with arsenal, it works well when in groups of enemy's specially since you drop rockets doing some good damage. Also when using vault you got that down already, when i run into champs and elites i like to do a x line through them if they are in groups, or if they chase you down hallways keep using it to burn them as they walk through it does some good damage. its good to have at least 40000 health or more i find, But you need at least 700 resistance to all elements and 7000 armor to get through it ( on inferno anyway)
Looking at your gear, you don't appear to be using a build anything close to what you're suggesting. Those stats would be awesome, but are unnecessary. With my magic find build I'm at ~150 all resist and 26k hp, and 94k dps. So long as Gloom is up and I'm dealing damage, almost nothing can hurt me. My regular gear is ~350 resists, 22k hp and 108k dps, and I'm nearly unstoppable.
no on noxxic they have a suggestion of what armor and resistance you should have for inferno, that is what i posted