As a WHM, i would suggest using Field Commander aswell. Other than Slaughter, i would also not use any Tank accessory. I am getting lb'ed once every 10 games of Sieze maybe and i think for this low rate of lbs its not needed to have 3k more health. And if they really focus you, you will die anyway, no matter if 9.5 or 12k.

So Field Commander also gives you additional INT, wich more than doubles your overall Attack power and it turns Assize into and impressive AOE finisher and you will be able to end a game with 50k damage dealt and still 600k-1200k healing.