I think this is a good build (totem+zombie)

So I just reached level 60 (highest guy i have) and I'm wondering how well or how horrible my build is. So here it is (please feel free to comment on any of it):
Dual flame totem and zombies to take hits and explode (eventually)
Items:


Skill tree (went mostly tanky)
http://www.pathofexile.com/passive-skill-tree/AAAAAgEAAnEEswVbEdsUTRVQGS4aOCWvJ-0pLilPLKcy0TwtPydFR0bXTP9N2FBQVElYY1nzWitdxl8_YG1nm26qd2J6uHrmfVOBb4KbgziLjIx2jM-PRpBVnYCePKIAo_KnCKeErKquk69stQS3PriTud3EFcT2xYrGrsbY0NDUFdR81I_a3d0F3fPhc-dS52rsOO0g7w7wH_Iv9kg=

My problems are currently mana based, really need more mana and mana regen. Also would like even more defense. I feel that my damage is pretty decent.

Thoughts?