I leveled the first few levels using Ethereal Knives. From there I went to Essence Drain + Contagian / Wither + Spell Totem (look up that build on PoE forums for gameplay/linking but disregard their tree) until 53 (the level you can equip the required dagger) at which point I moved over to the 5L firestorm trap. The leveling was quite easy except for (oddly enough) the end of Normal. Just pick up the Chaos nodes while leveling then when you get to about 40 or so start picking up the Trap nodes.
If you play TSC I know there is a Black Maw unique talisman in the guild stash that you can exploit as well. Just socket it with fire trap and level up with the trap nodes.
I also have a spare Infernal Mantle on TSC. Its only 2 socket but I could jewel it up to 6. I'm low on fusers so I can't help you out with linking it, though. Also be aware you'll need about 20-30 chaos to buy the required dagger. The Binos is about 1.5ex but thats more a luxury to the build.