Now this is what I call big. In that space I think I would build an O scale layout to run long trains, let alone in N scale - can't wait to see how it turns out. Anybody want to sign up for an engineers job? (Helps if you like Uncle Pete, I guess :-) )
http://www.unionpacificmodelrailroad.com.au/index.html
Steve Magee
Newcastle NSW Aust
If I remember correctly there is ( was a larger all scale layout/exhibit in NEW JERSEY open to all