Only this morning I watched this tutorial. Really good info that I can use.
https://youtube.com/watch?v+jnke_KzeTI8
She shows layering a large quilt on a small table.

The house I grew up in had no place with enough room to lay out a quilt to baste. So we'd wait for a nice day and set the frame up outside, lay out the backing, batting and top, and then start basting and rolling the quilt up. Once that was done, the quilting was done using a big hoop and a comfy chair.

Could you use (rent) a table at your local library or at a local church? Anything to avoid having to work off the floor!

Do you have a local church, library, quilt shop, or recreation center nearby with tables that can be pushed together for laying out your quilt? It would really save your knees.

All basted, it wasn't that bad! Sometimes thinking about a job and psyching yourself up for it is worse than doing it.

One more thing, my friend sent some thread in a sort of hank - the way yarn used to come. "Rice Silamide, waxed for hand sewing, Conviently (sp) put up". Who on earth thinks a big hank of thread (currently draped around my lampshade) is more convenient than a spool!!

I either go to Senior Center to lay our my quilt or the tables iin my church to do it. Makes is much easier