Don thanks bro!

As to build or sell. Well it flies like a WWI bipe. Takes some coordination of rudder and ailerons. Mine came out pretty heave at 17.5 lbs. I fly it with an OS 120 Suprass with pump. It flies the plane fine. As I mentioned before its a builder's kit. Lots of sticks!!
If you want it to look good (Pretty Scale) then plan on spending a decent amount (took me 3 years on and off) of time making everything because Duncan doesn't provide any detail parts nor did he provide drawings for the parts you would want.

Here's another picture, its of the Interior. Everything is scratch built with the exception of 3 instrument faces.