Hexblast EHP optimizing

Hey, got a request.. Can some hexblast experienced player look at my build and suggest what to change to get some survivability? Got like 500m DPS, from what should i resign to get some satsfying defensive?

Thanx a lot for any advices.

https://pobb.in/Uaxu_D9OzofO

newb here.
went to poe.ninja to check out similar build
https://poe.ninja/builds/necropolis/character/Ess3nt1al/ChargeMaxxing?i=6&search=skills%3DHexblast%26class%3DOccultist%26sort%3Dehp

compare there?