Dominique, I think those ESCI (now Italieri) cockpits were in 1/12 scale--just the right size for some of my anime figures to fit into!
![Big Smile [:D]](/FSM/CS/emoticons/icon_smile_big.gif)
Izzy, I would suggest your best bet is to start with some research. Get as many pics of the 'office' as possible and then start drawing some plans in a vector graphics or CAD program. When I started my Victoria SSK scratchbuild project I used a bunch of pics as reference and then drew the actual plans in Freehand MX (from Macromedia). Using a vector program allows for easier scaling--that way you could do it in 1/12 or 1/48, or 1/72
HTH
Sean