Just read your post and haven't gone to the member photos yet to check out your rig... you know you can always post a "teaser" or two right in the forum posting...
We have a 1955
Flying Cloud that is empty too... Hubby wants to return it to as original as we can... looking at the marks on the walls from what was once there and lots of archive photos and diagrams to figure it all out. Here is his thread and his "diagrams" he generates on his computer... (toward the end) http://www.airforums.com/forums/f36/...wax-25692.html
If you are wanting to really personalize your trailer, I suggest you take in a rally or two... check out the rally calendar and find some near you and go. You will have an opportunity to check out other folks' rigs and talk with them. It will give you a good idea of things you like and don't like. Take your camera (we all love to have folks take pics of our rigs...) and snap shots of things you particularly like. That should give you some ideas of where to start!
You might want to explore the layouts on the different models at the Vintage Airstream Photo Archives... pretty interesting.
Vintage Airstream Photo Archives
We have seen some folks who have completely redesigned their interiors and some have gone very "Moderne" and simple...
What kind of things are you thinking about?
Mrs. NorCal Bambi traveling in S Tardis ~ from the Great State of Jefferson