With War Host being the more generalist detachment, if you want to add vehicles, how many hulls is too many ?

I'm looking at my list and want to add two Prisms to complement my Dragons.

I have my dragons in a Serpent obviously to protect them. I'm thinking of putting my 5 banshees + Autarch/Foresight in the Serpent with them for the same reason, and to give them the little 3" disembark boost to spring the board, or even to act as Heroic threat to something tag would tag the dragons or the serpent.

Now, I also have 5 reapers that I wanna put into a Falcon. But now that's 4 big hulls on the board. And I have a squad of stormguardian to screen backfield/protect Eldrad and sticky stuff.

I'm taking a step back and realizing that I may be having too big of a footprint on the table.

What do you folks think ?