T9 and LB3

[LunaHoshino]

With current gear, you should be able to push into the next phase without needing an LB at all, especially with 3 DRGs in the party. What does everyone's ilvl look like?

If you do need an LB to push, though, a melee LB2 should be more than enough. LB Nael immediately after the supernovas go out during the second Heavensfall and you should be good.

Your group composition is absolutely doable DPS-wise. My only suggestion would be that you solo tank it, because that will add one more DPS to the mix. Four meteors is pretty good, though! If you can get four meteors, you can definitely skip the 2nd add.