Thank you, there's lots to consider.
The mechanical side doesn't bother me, as like you said, I could just buy a second for spares. It's more the control cabinet parts that worry me.
In reality, do the controller parts need replacing often, are there common issues?
It wouldn't be a big deal if I couldn't figure out a turntable, after all I'd have 6dof 😜. I could just do multiple setups.