New workbench design question. I feel stuck.

Love this saw but it's 1200lbs. It's the heart of the new garage workshop. I rebuilt it and it runs like a dream except it needs outfeed support and I need a work / assembly table, so I'm trying to build one but am having design problems that I could use a few more opinions on..

My issue is that my garage is a modular workshop so everything inside needs to be on casters. When it snows the car needs to be in the garage because our driveway is below grade with retaining walls on both sides, so there's nowhere to put the snow, and we have a plow that comes and removes the snow from the driveway. But with the car there they can't do it and we're SOL. That's also why those tiles are on the garage floor, they allow drainage to go below them (which is useful since its all below grade).

So no problem, just build a work table on casters right? Well, since all garages with drains are sloped toward the drain, nothing will remain level to eachother unless its attached. The only alternative is to build it so it's level in one exact specific spot, and nowhere else in the garage will the workbench be level.

My thinking was to build a workbench assembly that would include the saw, so if it all travels together, it will at least remain in plane to one another. However with the weight of the saw, if I were to build it into a worktable (including the router table and fliptop items I'll be including in it to save space), this rolling workbench will be 2000lbs, and I don't know if I'll be able to actually move it around! Especially since those floor tiles will provide some resistance to rolling.

I already have the heavy duty casters (well pseudo heavy-duty but enough of them to split up the load). How should I build this? Should I make two separate halves that won't line up depending on where in the shop they end up together? Or do I build one big one and just try pushing it? What would you do?