I was just mentioning this as another limited run modeller in the Netherlands was questioning the 3D prints sustainability. He preferred to make resin castings in stead from a mold based on a 3D print. I don't think resin would be an alternative though for the wings.
It was a discussion I have had with my railway modeller friends about a 3D printed roof of an ancient coach:

The entire coach is etched brass and it has a full interior with all benches, cushions arm- and headrests.
Here this 3D printed roof ofcourse has full support of the brass structure.
Upon closer inpection of your 3D drawings above I already noticed some brass rods.
regards,
Ivo