I have the Coachmen Apex 151RBX. It has a queen on the front and back fold outs, the dinette folds into a bed and the couch folds out to a bed as well.
Here's the floorplan for my trailer: Apex 151RBX
I'm 6'5" and with the way I sleep (1/2-way fetal position) I seem to fit fine side-to-side on the bunks.
A tip for the fold out beds. When storing the bunk ends, take the mattress out, fold the bed up, then stow the mattress. This will prevent the tent material from getting pinched in the seals. It also makes for a "prettier" presentation inside if you are not using all the beds. I closed mine up leaving the mattress down and it looked like a parachute was filled up inside.
The center support poles will fit nicely in the fold of the mattress too.
We haven't camped in it yet. It's back at the dealer having a few frame welds re-done. My first trip is in a few weeks. Hopefully it'll be ready by then.
My photo gallery:
My Apex 151RBX Gallery