Hi Troy - thanks for watching! There are a couple different threads (1, 2, 3) on the forums regarding the work surface and/or enclosure. If you want the controller next to the machine, you will need at least 55" wide; if you will mount the controller somewhere else, 48" if good enough. You will need at least 47" deep. So, finding a pre-made desk that large will be difficult (but not impossible). For the height, depends on where you will be using it. I have mine in my office inside, so it is at desk height (28"). If I had it in the garage, it would probably be at work surface height (closer to 32"), but that depends on how tall you are and what is a comfortable working height for you.
Hope this helps!
-Tom