The grain bill looks good to me. +1 on the rice hulls. Wheat malts do not have husks that add in lautering, so Rice Hulls would be beneficial. A couple of hand fulls is all you need. I recommend soaking the rice hulls in hot water for 15 minutes before adding them to the mash tun. That way the hulls will soak up some water before getting added to the mash, and rice hulls always seem to leave the water looking dirty. Not something I would want in my beer.