You sound like myself to a degree. I'm not back into planes but I enjoy building. You apparently enjoy building "scale" aircraft which takes time and skill. IF
you are willing to divert some of that time into building the Mr. Darby then by all means keep it and build it. If, on the other hand, you are adamant about the scale aircraft and really don't wish to dable in watercraft, offer it for sale here.
I will tell you right up front I would be interested in the Mr. Darby because it is the original 48" model, it is a unique Tug that can be continually upgraded with scale features as time goes on and I enjoy building boats but
since my funds are somewhat limited I probably would not be able to buy from you - just being honest and up front. What I would like and what I can afford are always two diffrent things
but I acept it and don't cry over "spilt milk".
Hope I've helped you in some way to make a decision.