I agree.. you could simplify ..
Use 60% Wheat .. maybe a little bit of Torrified Wheat . The rest Pale malt and a 2lbs of Munich.
You really only need 4 types of grain. Plain Wheat, Torrified Wheat (for head retention), Pale, and Munich (for color/maltiness). Although I have done a Dunkel before that had a bit of Crystal 20L in it, and it tasted fine.