Many of the contributions at WeldingWeb were movable. This was necessary for most. I have a 10 foot table on the other wall that has 6 wheels and is easily movable and not as tall for those kinds of projects. I had a very nice Plasma and got rid of it. The reason I did was the amount of smoke and soot it creates and that is not a good idea in my shop. I find other ways to cut things or take the Torch outside. It's not ideal, but I have a welding shop down the street that does the heavy lifting.
The top gets cleaned after every welding job. I use thick paint scraper and scrape all the slag off then use Simply Green to wipe it down a few times a week. Like all of my steel countertops, I keep the mill scale in tact as much as possible to protect the surface. I have plans to put a drawer on the non clamping side. The reason for the 10 foot by 8 foot sheet of galv is to manage the slag problem. Seems to work.