I am still playing around with which runes I like best, but (http://us.battle.net/d3/en/calculato...UTY!afc!aaaccY) is my build. I think I am going to go back to leaching beasts on the dogs, and might move to slow burn on the acid rain. Leaching beasts makes very little difference , but then again, so does every zombie dog rune :(.
My current gear (http://us.battle.net/d3/en/profile/R...64/hero/154658). I have 0 LOH. Between spirit walk [Healing Journey], potions, and life globes, I don't feel I need any. I can do either act 2 or 3 comfortably, but I find act 3 killing slow enough to not be worth it. I also will do Whimseyshire runs here and there. Although I can clear the place, I tend to die once or twice a run to some of the harder elite/champion packs.
What I have personally found playing around with my spec is that you pretty much need two "Mana Regen" type passives to make up for Vision Quest. Blood Ritual + One of (Vision Quest, Rush of Essence, or Spirtual Attunement) puts me on par mana wise with where I was with just vision quest. I have used bears, and I can still spam them with two regen passives, but I find acid cloud to be safer, and the targeting less frustrating. I like not having to be anywhere near monsters to hit them, and not having bears run in strange directions nowhere near what I clicked.