Hi mkc,
Yes, you can get an 11' table frame for the Lenni machine! And the footprint that you talked about, 4'5" is just the machine's footprint. We recommend a minimum of 2' on 3 sides of the table frame to be able to stand and operate the machine. One end can go right up against a wall and leave the other end (2') to get front to back. And yes, you can put casters or furniture glides under the feet to be able to move the frame around in your room if you are kind of tight front to back. Hope that helps!