http://us.battle.net/d3/en/calculator/wizard#bgXYOh!Vbg!ccaYYc

These are my thoughts

Shock Pulse + Slow time to get over 24% (not factoring in attack rate gear) chance of stun with passive Paralysis

Explosive then frost nova if they get to close

Critical mass to reduce cooldowns (As far as I know Explosive chain still works on this.)

Demon skin for extra protection + Force Armor to help absorb hits.

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Just my idea of a decent build. Thoughts?