I woke-up this morning after pondering my bed size quandry last night. As I stretched diagonally across my queen size bed, I realized how often I do this. This caused me to realize that I need a queen size bed in my Airstream also. Thanks for all of the replies. I have given them all consideration. I was unaware of the Sleep Number matress as posted in the replies. I've had some rave reviews from others who use one and am considering one for this project. Thanks Again!!
P.S. I'll post progress pictires.