In my opinion, if you can find a way to get a bit more life (7-10k), you could then stop running Jungle Fortitude and run Circle of Life. When you do that, drop either Firebomb or Plague of Toads (Even if Rain of Toads is the coolest spell in the game) and put on Sacrifice-Pride. Also, switch Pierce the Veil for Grave Injustice. Then, get rid of dogs and use Spirit Walk-Honored Guest. The synergy from all those changes combined would double to triple the amount of bears you cast. Your only issue would be elite packs, but if your play at the right mp they will die before you run out. If you still had mana issues you could use the Swallow your Soul rune for Soul Harvest.
My ratings: 8/10 for trying something unique, but 6/10 for high mp efficiency...but I could be wrong. Play how you like, of course.