You're right about Power Management, but I think Aimed Shot is a so-so choice with this build. Coupled with good Goggles I had a quite high crit chance and was getting them rather reliably. Recklessness adds 7% more crit chance which is huge when you add the bonus of Steadfast Aim. Gunslinger I did not pick because it doesn't work with Energy weapons. I did not pick Opportunist because I'm unsure what it works with. The wording on the feats is crap and not always clear.
Yeah, my bad, forgot about the Gunslinger. Aimed Shot is great, though. You make 2 shots per turn, it works once every 3 turns, i.e., once every 3 shots. Your crit chance, even with all the bonuses, will be smth 40 percent. So that's 60% to one shot - 10% on the average. And that's when you want it, not when it happens by rng.
And opportunist totally works with the stun from electro pistol and with the rooting from the acid pistol. The lesser bonus also applies to the chill from the cryo one.