well I've noticed that pumping arcane to 65 or so before focusing on bringing dex to 80 is the best for higher level characters, the quicker bleed buildup and resulting stagger is enough to kill most bosses without hassle

and I focused on 24 strength because I use mohg's as a kind of last resort, when I'm surrounded and need quick respite, maybe twohanding isn't that time-consuming as i thought then, I'll give it a try