What spacific weapons in your
DW squads and on Belial? Weapon loadouts for
DW squads are really important. If your planning on footslogging them I would make room for the Terminator apothecary that Belial allows you to take.
Also I'm not the biggest
CML fan (assuming your playing C

A gear). I think they can have a place in
DW squads but if your only taking one heavy weapon I'd strongly suggest the Assault Cannon. Since you have long range anti tank already with your Pred, I'd suggest it even more.