My first thought was a 10'+ bench along one wall butted into the corner with an wall exhaust fan at bench level in the corner and a Shop vac with a wet spark trap that will hook up to the bench tools. Is a rotovice on a pedestal worth setting up as a semi permanent fixture in the center of the space? I'm assuming a 3x4" flat surface for layout could be on a cart, but actual surface plate capable of levering off of would need to be stationary.