I'd recommend the Holley brushless pump. It comes with a voltage controller that can be integrated to the Dominator.

The brushless pumps don't have the issue's standard motor pumps have when voltage is reduced, they are unaffected. The Holley controller is simply a 6/12V voltage switch for the pump. The nice part is that at the lower voltage, your not pumping (heating) excess fuel to return to the tank.

You can set up a strategy in the Dominator to switch pump voltage based on whatever parameters you want, or any combination, i.e. boost, TPS %, etc...

I would think the VR1 should handle your power on gas. The VR2 is basically two VR1's joined together.
You can in tank mount the pump, I have a VR2 in my cell.