Lookup critical mass/storm chaser builds. That is what i'm using at the moment and I can solo act 3 seigebreaker runs pretty decent. I found two legendaries yesterday. You can use my build
as a guide. Your gear looks pretty good. You need crit chance, arcane power on crit, attack speed, resistances, armor, and vitality. Int is nice and crit dmg is nice but I would work on the other stuff first if you do decide to go with a tank wiz.
This post was edited on 9/24 at 12:19 pm