This file aims at keeping trace of the design of such bike. The legality of the bike is to be fit for Swiss law and a self make bike to be approved by local autorities.
The question is to go with parts or only with the framekit.
I guess that the BBSHD would fit the best. Or even a ToSeven DM01 (getting ready).
I guess that the Alfine 11 would fit the best but it is costly. The Enviolo extreme seems better.
Well, I guess that the belt is nice, but not sure it is available easily for now with th DIY style..