Congrats! I love my dynamo lights. Neither a fancy schmidt hub nor a bottom dollar shimano hub give any noticeable drag at all on the bikes they are on. I don't bother turning the lights off.

I am thinking about a dynamo wheel for a 3rd bike, my relatively sprightly Traitor (in the picture), which I am considering turning into a year-rounder with fenders and lights. Fork crown is about the only place to put a light on it, and if I'm doing that, why not a dynamo hub...