I am building my first 3D-printed RC model airplane.
This will be a "Plane Print" design, and will have a 67½" length.
https://www.planeprint.com/learjet
David printed all the parts for me (I paid him for this) and helped me acquire all the parts needed for assembly. I had the twin 70mm ducted fan (and speed controls already), and test-fitted that they would fit. They do.
After considerable reading, planning and preparation, I started on the fuselage. The design uses small alignment tabs that really help parts fit together properly. I'm using fast, medium and slow CA glue, using my judgement as to which glue is suitable for the task at hand.
Looks incredible. Good luck and thanks for sharing.