You'll be fine with bronze, but eventually you'll probably end up with a lot of other stainless equipment. At that point you won't want one bronze valve with an entirely stainless setup and you'll replace it. It costs a little more now, but you won't replace it later.
On tap: IPA, Pumpkin Ale, Belgian Dubbel, Oatmeal Stout, Weizenbock
Aging: Magic Hat #9 clone
Next up: Strong Golden Ale