Years and years ago, when I was still young and flexible, I had a table 36" wide with approp mat. I'm tall and I couldn't reach far enough to control the material and cut at the same time. Now I use 24" and walk around. If the quilt is really wide, it goes on the dining room table with 2 lg portable mats. I just don't need it that often and it takes up too much space.
Now you still want/need a wide table and mat, I think I'd ask the LQS what they use.