My build is nearing functionality .. at some level.

Where should I post this ?

It is a VMC approx equal to a HAAS VF5 in workpiece size, 1600 x 500 mm table size.
ISO30 spindle, auto toolchanger capacity, etc.
Single microns resolution tbd based on proven measurements, probably about 0,5-1-3 microns resolution.

Maybe spent 17.000 work hours at it, and 100k€+ in current value tooling.

I do not know what is the optimal way to showcase this -- nor the best way to go forward commercially.
Any ideas and experiences are very welcome.

Fwiw..
Z axis needs back mounts on z axis to be fabbed,
the spindle mount to be fixed to the ram,
the spindle drive motor to be fixed. Spindle mount is made for 10-20 kW power.
A spindle drive of some kind.