Hammer of Wrath GT Tomorrow! I’m Playing Iron Hands? WTF!?

I've been an almost religiously devout player of Salamanders in 7th edition thus far. Those who follow this Blog or know me IRL know I am a devotee to the XVIII Legion and their Promethean Cult. However, with the Hammer of Wrath GT tomorrow I am switching chapters and going Iron Hands. After the Bay Area Open I decided to tear down my list and start over, I kept coming back to similar builds but