Agreed. You are absolutely right. This project in 1/6 scale is formidable on all levels, especially printing the parts in such a large scale. Then comes the assembly phase. Considering that the print medium could shrink and warp over time, it would be best to design and build the printed parts into sub-assemblies that can be moulded and cast in a more durable and stable resin. These resin sub-assemblies would then need to be built around a central core structure within the chassis that could properly support the weight of the finished model in all modes of display (hanging from wires, supported on rods, etc.) The same forces that would affect a suspended 1:1 scale spinner would also affect this smaller version. It will want to twist, contort, and deflect in the same way if the weight of the sub-assembly parts is not properly transferred on to a core structure. This process of moulding and casting usable resin part will add a tremendous expense to the project, but it is a worthy investment if we want our models to last for decades to come. Painting and wiring will also be high hurtles to jump, but building a structurally sound and well supported model that can be assembled, and disassembled if necessary, by screws will be the most important thing to do. As far as wiring is concerned, I too will have to consult an expert. Still, the end result will be well worth our time and money, I believe. It will be a learning experience for certain.
Rick