Just a small update:
I've ditched much of the retro crazy German look and feel of the bike. For a while I spent time trying to get the position really down low so that I was lying on top of the bike. To do that I bought a banana saddle and sissy bar. I've chopped all of it up and even with the saddle as low as it was the position still wasn't quite right. I gave up somewhere along the line and I've decided to go upright again, dirt track style!
The bike instantly feels slower, but a lot more playful now that I'm sitting upright instead of lying low.