Thanks for all the good ideas! I ended up with an interim solution of moving everything into my bedroom. It's a big oversized bedroom with lots of space. I have a large computer desk that worked perfectly for my sewing machine and extension table. For now I'm going to make do with using the top of my low chest of drawers as a cutting surface. No fancy wheels, but it's a good height and surface. This gets it out of the dining room for now and working with it a bit may let me know better what I want.
Thanks for all the great suggestions. You've given me some great options to think about!
Dana