RE: GP Super Stearman
If you work steady on it, and you have your tools set and ready; ten, maybe fifteen minutes and it's assembled.
If you fly off a grass field, you can use larger wheels. There isn't as big a weight issue as some say. It takes about 41 ounces total on the nose, I believe. I mounted my servos in the rear and it balance fine.
The ailerons are easier to get the wrinkles out of if you just recover them, if the wrinkles are bad.
~ Jim ~