I built my booth to overcome the objection that Dallas mentioned above (uncomfortable vertical backs on the seats) and take a bit less space than full time angled seat backs would. I have the backs hinged at their vertical center so they are angled for sitting and vertical for sleeping. My booth is 36" wide, the seat cushions are 17"x36"x4" and, the seat back cushions are 19"x36"x4". I used foam with an ILD of 55 for the cushions and had an upholstery shop make the covers out of fabric my wife chose. The benches under the seats are 13" above the floor under the cushion. My seat back tops are 5" from vertical in the angled positions. The table is sized and the benches positioned so the cushions fill the area in the 'sleeping' position. This results in a 72" x36" sleep surface which is very close to a 'twin' bed size. Like all the other woodwork in my bus the dinette is built out of hard maple and maple veneer plywood. I used 3/4" for the seat tops and table and 1/4", in 3/4'x 1 1/2" maple frames for the vertical parts of the benches and the seat backs. I've laid on it as a bed but not slept on it and it feels fine. The seating is much more comfortable than any other 'motorhome' dinette I've sat in.
Jerry 4107 1120
Jerry, Do you have any pictures you could send me of your both?