T9 heavens fall push help

[Electrowitch]

-melee stay on boss the whole time (except to get out of dragon aoe)
-use pots right after 1st heavens fall and blow all cooldowns, Smns get dots up then Bane to add when it spawns (side note you can use both stat and poison pots, they are not on same cool down)
-use Mage Lb3 to finish off dragon and help push boss

Well, it doesnt relly matter how you do it. Of course the way you describe works well(in a pt with capable dps). But you can also LB3 melee right away.(or after add if the 3rd bar didnt fill with megaflare) Have the Melees
also dps the add. and then everyone on the boss again. We have Nael usually at 48 during 2nd Heavensfall so we can push that 1% to not even get that Super Nova during 2nd Heavensfall.

I think there´s no need to give OP "advice" how to do it, since so many different ways work well. YOu just do what you feel most comfortable with. Party from OP has definatly a general dps Problem.