Ah, you know what? I just realized the late game feats are kind of unoptimized. I just took 6th shot and uncanny dodge because they were what made sense at the time, I think thats when I beat Invictus and shotguns were the best way to get stun on him. I took Uncanny dodge cause I was fighting like 20+ natives and some would always manage to close in to melee range, but suppressive fire and hit and run were just kind of tacked on because i was getting bored with the game. 6th shot and uncanny dodge are still good, but they don't synergize with anything and uncanny dodge requires ajility upgrades.
I think you'd be better off with ambush and blindsiding.