PoE _Katu builds

It's the part of the league where I sell all my stuff and try out weird ideas. I have the beginning of a build and I am at a wall, or crossroads more like. on how to progress and i would like to hear you guys opinion. The core concept i wanted to try out is: 1. ralakesh boots with+1 endurance corruption , Arn's Anguish, x2 synth endurance rings (got downgraded to just one +1 endurance precursors and a ring of kalandra due to budget) , a +2 endurance charge staff, and charms which give % life regen rate and, most crucially