This is my setup for a PvE Striker. As recommended, it's 6K on Stamina. I dumped 1K into electronics, so I can take advantage of Ferocious on some weapons. I had to reroll some talents/main talent on some gear, so some choices here might seem odd. The gear mods are DtE mods, with FA. Performance are self-heal. If your weapons already got Ferocious as free talent, you can go 1K more in Firearms. I decided to use a bag with stability, so you can enhance the stability bonus offered from the gear itself.
Main weapon: Bullfrog with Predatory/Ferocious. The mods have the highest crit available. I decided to go for range, so that's why I use a vertical grip . The Predatory will heal yourself in combat, as you might find yourself in open areas/on the move often. Ferocious is a must-have for a PvE build in general. Other ARs are LWM4/LVOA-C. Make sure Ferocious is a free talent, if you don't have enough ELE.
Secondary: Showstopper. The talents on this might not be the most ideal, although it got Responsive. Fierce will increase the crit damage and I decided to enhance it with crit mods. The ideal talent combo is still Destructive/Responsive. Alternatively, a SASG-12 w/Responsive, Destructive, Ferocious (free talent) can fill the gap, until you get a Showstopper.
Side-arm: A double Barreled Sawn off shotgun. Destructive, Meticulous and Determined (free talent). I only use it due to Determined. Alternatively, a pistol with Coolheaded can do the same trick.
I prefer using the Pulse so I can tag enemies. Also use an Immunizer station if I need to stay in cover and enemies pop a grenade or two, or run Blackout