I'm planning the same build for my next play through although I may go with a Dwarf.
My suggestion would be forget about Intelligence and have just enough Constitution to equip your shield. This guy will have so much armor and armor restoring options that your vitality will not be hit often and if it does, Necromancy will allow you to heal up from doing damage.
Necro spells do physical damage which will be boosted by warfare. Also you will want to use Decaying Touch to turn all your healing spells into damage spells. If you are using Hydro and Geo mostly for heals and armor restoring those spells get no boost from Intelligence (if you want damage spells from Hydro & Geo that's a different story).
Also a couple points in Polymorph is a good thing. I prefer Bull Rush over the warfare charge because it does armor piercing damage, Tentacle Lash is fantastic as it does physical damage boosted by strength and warfare plus sets atrophy, and chicken form with crippling strike combo is nice.
Sure 2-H will do more damage but this build still does very good damage and is nearly impossible to kill while keeping the rest of your party healed up and in full armor. Plus I like being a melee healer because Soothing Cold and Mend Metal are short range AOE.
Last edited by GamerSerg; 08/10/17 05:03 PM.