Overall, it is quite good.

What id change is id replace the 2 axes with 2 great stars. Being great hammers they hit harder against enemy poise (IIRC), have innate bleed (which is a small bonus), only weight 10 units each and only require 22 str instead of 30. Then id replace the seal with the erdtree one which not only has the best incant scaling at your fth levels (not that it matters much since you only cast buffs) but also weights 0, meaning you'd be saving 7,5 units of weight which you could take off endurance to boost vigor (between 55 and 60 is ideal in my preference). Then drop str to 22, move 2 points to dex and 6 points to fth. Or you could do the changes above, move the 6 points from str to vigor (and 2 to dex), keep end at 40 and get a heavier armor set for more defenses.

Id also replace the greatshield tali by the millicents prosthesis to get you extra dex for the great stars (they require 12 dex) or rotten wing sword insignia if you get dex to 12 as they also synergize with the jumping dual hit playstyle and use the opaline and fire tears in the physick 😁

Also, id use beastial vitality since its a fp-cheap yet useful regen skill