Beautiful machine, and a great-sounding project. Now, I'm not a purist by any stretch, but it's nice to hear you're not going to hack it to bits to make yet another 650 cafe or street-tracker...
Keep the pictures coming.
It's funny you mention the dancing-on-the-centerstand. I'm working on a little CB200, and it's the worst stand-dancer I've ever seen. At anything over 2000 rpm, it'll walk all OVER the garage...
Non-counterbalanced 360-degree twin, I guess. I had an old Kawasaki KZ400, and it had dual counterbalancers, and that thing was VERY smooth. One of the nicest twins I've owned.
Anyway, have fun with the project.
Kirk