I have a T-shirt quilt started (as in, T-shirts cut apart, waiting to be interfaced) for a friend. It's going to be large, too....not looking forward to this. I think I'll end up quilting it on my kitchen table, so that I can have it resting on a large surface.

When you decide to start yours, check out the search on this forum to give you some more tips.
http://www.quiltingboard.com/search....+quilts&u=&s=0

You can do it

You might try using your ironing board to support part of the weight. Sure helps me. I just "park" it perpendicular to my sewing machine on the left. Then I put it back on the other side of the room when I am finished.

I finished (except for binding)! Battery is charging, so I can't get a pic yet, but will soon. I don't have a dedicated sewing area, and had to work off the kitchen table. I also had 2 folding tables and a small tray table set up to help hold the weight of the quilt. Even with a large sheet of vinyl and my supreme slider, it was difficult. The quilt kept catching on the corners of the table and didn't slide as well as it needed to. I really miss my old kitchen table. It was formica with rounded corners and edging. Someday maybe I can find another like it.

I done one and it about killed me too-it was so heavy-I said I wold never do another.lol Good luck

Sorry for you pain, but I look forward to seeing a picture when you are done.