Paragon was ~500. I used some kind of flashfire wiz: http://us.battle.net/d3/en/calculator/wizard#QUYhjS!dXiY!ZYbcYZ
This is 3-stack tal-rasha build. Arcanot for additional apcane power, glass cannon for additional damage. Be aware that this build can be pretty low on toughness and heavily depend on gear.
Use arzechian armguards.
Aether walker, rorg and gloves of warship cubed.
Also u need to know map patterns well.