This build works well for me. I have completed most Legendary missions solo with this build. It has a 18.1s Flash Bang refresh and a 17.8s Life Support refresh. The Life Support healing rate is 8,772 HP/s with 5% healing rate mods (x4). The amount of firearms is usually sufficient in most encounters and the quick flash bang refresh helps to speed up the mission. On certain missions I will switch to the flame turret for specific sections or may run the Ammo Cache instead of the Life Support. It is a fun build and the quick healing of the Life Support as well as Predatory keeps you at full health fairly often.
The Primary DPS this site has calculated is much higher than my actual DPS of 285,531. My firearms are at 4,691.