Hexblast non crit version

I need some help or Advice for my homebrew Hexblast build.

What kind of jewels should i aim for ?

https://pastebin.com/S0niX15g

What i can do better ?

When all the gems are on max level then i get 5 mio damage per hit.

The next skill point will get in the Chaos mastery for increased wither effekt.

Its kind of a work in progress :D

But so far i'm quite impressed, tankiness is somewhat way better than expected. Thanks to all the curses and less damage dealt.

Thanks in advance