you still trying toi get a scan from something costing less than $3000.
I admire your optimism :-)

MeshRoom > AutoDesk Fusion 360 > MeshMixer/Cura?Blender

can't you just do it in fusion 360 ? Not sure why you'd need meshroom or meshmixer.
You should be able to export an accurate .stl file direct from fusion360. Otherwise what's the point of it ?
Just looks like it's overcomplicated.

And i still stick by digital calipers and openscad ;-)