Currently on level 90-odd and enjoying a fine set-up. Warrior on the front row with huge damage reduction. Ranger back left, stun and apply poison, conjuror for 2 war golems when needed, group damage reduction buff, vortex for pushing melee types onto the back row and a rez, and a cleric on back row, for healing, a rez, and a smite (with 75% stun chance). I've had one party defeat which in all honesty was more me being lazy than anything else.