New player HOX Build feedback/feasible?

My Rota looked something like DE HFB BTD Demon Maw Infernalcurse (no casttime) HFB BTD Finisher Pillars1 Starter+1Step HFB Pillars Finisher Pillars2 Starter+1Step HFB Pillars Finisher BTD HFB BTD Finisher Pillars3 Starter+1Step HFB Pillars Finisher Inferno/Avatar …

With HS6 it changed to DE HFB BTD Demon Maw HFB BTD Finisher HS6 Starter HFB HS6 HFB Inferno/Infernal Curse BTD HFB BTD Finisher HS6 Starter HFB HS6 HFB Avatar…

Firelance has a high CD and is not reliable. Molten Steelslash has crap dmg.