what size carb for a 416 stroker

I'm running a 780DP on mine. Had to dink with the idle circuit a bit to lean it out at idle. Not unusual for a Holley to be rich out of the box. Picked up the Holley work book which helped a lot when making changes.
I talked to Holley. I picked up a small power valve than came with my carb. I think they advised I go from a 7 to a 5? Have not installed it yet.