There is also a Bob Parkinson Regal Eagle currently on Ebay at $85.00. That is an absolute steal. Add one of the OS 91 engines floating around out there and you have a great flying ducted fan trainer. It was designed to take anywhere from a 60 to 91 sized engine, and considered by many to be one of the finest jet trainers around. The Regal Eagles have gotten hard to come by lately but are well known for being a good first DF airplane. Construction is also mostly built up as you desire, with a few fiberglass or plastic parts.

Good luck in your quest.