For a 5 gal batch, I would just use an ounce of Hallertau at around 3.5 to 4.5% AAU for 60 mins and call it a day. Like hefeweizen, this is a style in which the taste is derived primarily from the yeast, so you don't want to overpower that with tons of hop bitterness. While Hallertau is my personal preference, I would bet you could use just about any low alpha hop and it would be just fine.
Out of curiosity, which yeast are you planning to use?