I got it working now. When you account for the BB it comes at about the same width than BB86, so I used a similar arrangement with the spacers.
The ZTTO bottom bracket is weird, couldn't find any compatible tool so I used a tube and some grips. Ordered one from China.
All in all, very light but fiddly. You need a 103mm spindle, so only BB86 compatible cranks like Force. I think it's possible to put a wider spindle on Red cranks, but can't confirm