Recipe looks good, I would give a listen to this, Jamil show that had Rodney Somebody, who won Sam Adams Longshot with his weizenbock. I am not a huge fan of the banana/clove profile, but we brewed this on our 1/2 bbl awhile back and loved it. Make sure to bottle some and put it away for awhile (and do not give it away, like I did!)
Its really more about getting the yeast to behave the way you want (more clove or more banana), while getting a nice dry beer with big mouthfeel and gentle warm alcohol heat. I would consider doing a ferrulic acid rest in your mash. My brewing partner brewed a beer with an identical grain bill using Hefe IV a few weeks after ours, and it was amazing how different the beers were.
The imports are good, but there is nothing like a well-made, non-oxidized Wbock (which most of the imports are). Ours was described as a pumpernickel banana nut bread in a glass.