I don't know about the details of this particular saw, but my Morso chopper extends 21" from the wall. The Pistorius Saw 28". (It would be 6" less if the dust collection hose went through the wall, something I have been threatening to do for some time now).
I have removed the left support from each and replaced it with a roller support that folds out from the wall. This has worked fine and reduced the floor space required. The chopper sits on a wall that is about 20 Ft wide, but by removing the left support, moulding can extend in front of a wall-mounted cutter. The saw is on a 12 ft. wall and is about 6 ft wide without the left support. I have another foot or so beyond that on the right side, so I can easily cut up to 60 inch rails. On the left hand side there is a door I can open that allows me to easily make the first cut on 12 ft sticks by using my fold-out roller. I rarely see a 12 ft stick anymore. But I am also blessed with doors on either end so I could cut up to 10 ft rails if I needed to.
I don't know if this convoluted post is any use, but wonder if you had considered trying something similar. And while Kai's idea of poking a hole in the exterior wall is not likely to be popular with a landlord, I have seen a number of shops with 12 x 12" pass-thrus cut in an interior wall. These are easy to patch when/if you leave.