Upgrade Sunsinger before anything. Once you have fire born its pretty safe to level Voidwalker. If you use Obsidian Mind then use Bad JuJu. Other than that I roll with my raid gear, all but my Apotheosis Veil (it replenishes Heath with orbs, great for Crota HM) and I use my SUROS, or Red Death. With my Black Hammer and Hunger of Crota (I know, I don't have the all mighty Ghorn). And if you've gotten Necrocasm then you can use it but I got it and think its lack luster (all but for the abyss, it's good for that). Other than that, your gonna trash people in Crucible.