i've done similar giant builds with either cry (meh), hours (not bad), crashing (pretty good to nuke dex so they can't pick up and rewield), and whirlwind of steel (not good).

i think it'd be better with either soul, whispers, or something utility like popping pills in combat at centurions, that extra parting blow, or calming for saving against wrath.

although i intend myself to play this at some point in the future.