Ghom Crusader - Fire/DoT build to proc Furnace. No wrath generators or Akkhan, uses Aughild (improves elite dmg and toughness) and Blackthorne 3-pc (+10% elite DMG, nice for Furnace, and also more toughness) or Cain (improves attack speed and exp gained). Nice Cindercoat needed for resource costs.
Skills and passives:
Crusader - Game Guide - Diablo III
Gear:
Helm: Andariel's Visage (fire/str/attack speed or crit chance/red 41% exp gem)
Shoulders: Aughild (str/vit/all ressists/+% heavens fury dmg)
Chest: Cindercoat (fire/str/vit/3 str gems)
Neck: Fire/str/crit chance or attack speed/crit dmg
Gloves: Magefist (fire/str/attack speed/crit chance/crit dmg)
Bracers: Aughild (fire/str/vit/crit chance)
Belt: Blackthorne (str/vit/all ressists/armor) or Hellcat Waistguard (str/vit/attack speed/+5% elite dmg)
Ring 1: Stone of Jordan (fire/str/crit chance or crit dmg/elite dmg)
Ring 2: Ring of Royal Grandeur (str/attack speed/crit chance/crit dmg) or Bul-Kathos's Wedding Band (str/crit chance/crit dmg/% life) or Hellfire Ring (str/attack speed/crit chance/crit dmg).
The last two provide higher DPS, but I recommend RoRG to use Cindercoat and Aughild 3-pc bonus.
Legs: Blackthorne (str/vit/+% life/2 str gems) or Cain (str/vit/all ressists/2 str gems) or Captain Crimson (str/vit/all ressists/2 str gems)
Boots: Fire Walkers (str/vit/all ressists) or Cain (str/vit/all ressists) or Captain Crimson (str/vit/all ressists)
2H weapon: The Furnace (dmg/str/+% weapon dmg or attack speed/diamond +20% elite dmg gem)
Shield: Lidless Wall (fire/str/attack speed/crit chance)