I start my sparge with no rice hulls, if it goes very slowly I'll stir the hulls in, otherwise I leave them out.
To the OP I brew a hefe with 40% wheat and it's pretty good, I like to ferment cool and get the clove flavor. Right now I have a wheat IPA in the fermenter with Perle for bittering, Cascade late additions and I'll dry hop with Amarillo. Wheat is a great brewing grain, there's so much that can be done with it.