RE: Too heavy to hang by tail???
The tailfeathers on most aircraft are relatively fragile. I think I'd avoid doing that. If you could rig it so some of the load was spread to the main landing gear or the wings, that might work. But all of the weight of the airplane on the tailcone; I'd be afraid that something would eventually fatigue and break. With a 12 foot ceiling, can't you put it on the wall with the nose pointed towards the ceiling, and hang it by the main landing gear? That's something I've seen done with planes before, and they seem to do OK.