9’6″ x 9’6″ (3m?) sounds about right I think given the size of that scope – or you would be hanging over the walls. I’ve worked comfortably with a scope and small foldup table in a 9ftx9ft. I am wondering if 8ftx8ft is just a bit too snug. But if I can set the thing up for remote use (30ft away in the lounge) would even 7ftx7ft be enough?
Separate note. Is that a MkIV Fullerscopes mount? They were hefty.