A rough list of dimensional constraints for the couch. The back half the height of the seat side. The seat needs to extend under the back by a few inches, I like four. If the inside back droid down as a table, than the back and the base needs to come to take height for me. The base should be wife enough for me fetal position or two adults, whichever is greater. Sooo… figure a 48″ seat, make the seat 24″ deep. This means the back is also a respectable 24″ tall. I’m 5’6″, so if I set the bench top to hit at roughly 32″, that means from floor to base is….carry the three…demux the muxer…8″. Sonofa… I need to look at that more.