Any Clever Ways to have a full size bed in Compact?

I use Sketchup, it's a free design program from google. This is close to scale, but not perfect. But if you take the time you can actually "build" things to scale, including material thicknesses. I'm like you, I need to see the thing, and this lets me do that without buying any wood. Using the mouse you can actually crawl inside a cabinet and look at the back of the door if you want. There's also a "warehouse" where people post scale appliances, vehicles, etc. I've put a water heater and light fixtures in there, and also downloaded my truck to build an elaborate toolbox for the bed...

No Compact, I have a '76 Shasta 2250 that needed an almost total gut due to rot. I didn't like the 70s decor/paneling/cabinets anyway, so I decided to rebuild it to my own specs. This drawing is just the rear bedroom, it originally had a set of bunk beds on each side that I didn't need, and only one cabinet that was in the middle of the rear wall between the windows. What I need is a combined bed/living room with some decent storage, and this is my latest idea. Not set in stone yet, but I'm close to locking it down. I find that the more time I think about something the better it comes out in the end.

As for the mattress... I'm probably going to build that myself too, because nothing is in a standard size. I don't really have 80 inches of length to make a real "queen"-length. It'll probably be about 60" w x 75" long. I'm 6' tall, so 6'3" should be long enough. Probably make the mattress in sections to make it fold up better. In my fantasies the sections are all made of fat tuck-and-rolled burgundy leather...

Here are the cabinets in the front.. I love them. It isn't the same anymore, different front window and that mdf paneling gone thank goodness. But those cabinets are STAYING! Soon to be accented with the cedar.. it's coming. So rest of the camper has plenty of space for the bed frame to come out.