I don't know that I would want to build it all over again, however, I'm getting interested in restoring an old airstream or similar trailer, and my wife is interested also. Of course her involvement ends with approving me to do it, and then periodically asking when it will be done.
At some point, I was sitting in my trailer about half way through the project, staring at four blank walls, and had the realization "Man, I'm having to make EVERYTHING"!
For anybody looking for advice, don't buy plywood from the big box stores. Seek out the lumber supply places that local woodworkers frequent, and use those. It's more expensive, it's usually harder to get home (farther) but worth it in the long run.
Oh, and that Kreg's pocket jig thingy is your new best friend.