Excellent build!
I can confirm how much your build kicks ass as I have by coincidence just played a similar build with SMGs, Versatility and Power Fist. It's completely DOMINATING viable and loads of fun.
I'd just thought to add that you could also go for a variant with AGI and PER at 3 and CON at 9. You loose Suppressive Fire and Spec Ops but you gain Survival Instincts, so Steel Cats 7.62mm bursts at the end come at 18 instead of 12, but with Critical Power and Specialization this packs an incredible punch (I would say this should hold despite the nerf for Crit Power).
(In case anyone is interested in the Power Fist side: you can get that one directly after Junkyard at level 10 and it has endgame specs, at DEX 18 it has 6 AP and 12 attacks with 72 AP = three pneumatic strikes, with Crit Power this really really hurts. The build is some Warhammer Inquisitor inspired Kill all the heretics build. What I love about versatility is if you get bored with SMGs, you punch for a while, and go back. And yes, I know, just crafting a 12 AP glove is even better, but you haven't lived, if you haven't played with the f**** Power Fist)