Here is what I’d do If I had enough space to build a lowrider:
Build two tables, one is a bit bigger than a full size plywood sheet, and the other one is smaller (roughly the size of the machine).
The small one can be detached from the big one. Once you don’t need the CNC router, you can just move the lowrider to its parking position (the little table), then remove the belts, disconnect the little table from the big one and move it away.
This way you have both a big table you can work on and a full sheet CNC router for whenever you need it.
I’ve made a little sketch to help understand the idea:
Hope it helps