Spellbreaker help

Hello guys, Im playing atm as a lvl 57 spellbreaker. I have no problem what so ever, everything works out perfectly as a Phantasmal Blades spellbreaker. I’ve heard that this build got some nerfs but everything dies with 2 hits excepts harder mobs.

Here is my build: http://grimcalc.com/build/IKiMCY

But the problem is that ultimate will be a much greater challenge. With my main ability maxed out since way before, the only source of increasing my dps, is with gear and here comes my real question, I have no clue what gear to go for except resistance, vitality/chaos/cold dmg. But what type of epics or legendary items will fit this build?

And can someone that is playing this type of build tell me if its viable to do in ultimate, if so what type of gear do I need? Full legendarys? How hard is it to make it viable in ultimate?