I was too impatient to put everything together properly, so here it is after the first test run. I'm really, really happy with the results.
Some quick thoughts, in random order, while the experience is still fresh:
* chain tension will require experimentation, and it's a bit noisy running through the bottom guard
* the sprocket height is like barely too low - i think 1cm would be more than enough to make it completely clear the swingarm under the rider's weight. I might try 15T or 16T front and see how it lays out then
* I had it set up with 100A in normal mode and 200A in sport. I didn't feel much difference between the modes down low, but they pick up in the higher portion of rpm and each has a higher limit. Still useful, I would say. In sport, first thing i did was an unsoliticited wheelie. Clearly even with just ~15kW it has plenty of pull with this gearing. It's going to be very interesting once I start ramping the power up.
* i definitely have to route all the cables better, and it wil definitely gain with some proper side covers
* both wheels are out of true quite significantly
* front suspension started working really well with the extra weight added.
Overall - I feel great about it.
Couple more shots. Look how skinny it is!
I'm taking bets on the weight. My personal guess is 92kg.