PoE Ahn's Might, Cold builds

I wanted to play around with Warcries and Ice Crash was just pretty, so I've been working on this build since league start. Nothing fancy yet as far as equipment goes, Ideally a + crit chest and a ring with frostbite on hit would be a better choice, but I've only put maybe 2-3 Ex worth of currency into this build. Handles T16 just fine, and while single target isn't great, with a little work this could get up to 1m Shaper DPS pretty easy, at least according to PoB. Let me know what you think, and any suggestions.