Build is ok. Just get a Seal of Skies as a filler to get some more heals from leech. Usually TSS chooses between TSS focus with the green book and Cataclysm. You chose the former which is fine.
For survivability, it’s more meta to go for regen with Behemoth over the green belt with Scales because you waste the flat rr on Scales when you still pick Crown, and you can only get half the Scales leech anyway. Check out ⭐ Top 20 Softcore builds in Grim Dawn (An Opinion)