I built the interplane struts using K&S airfoiled aluminum tubing. The joints were epoxy. The tube ends were stuffed with wood and drilled to accept the wire pins as per plans. They survived longer than the Miniplane did!
The cabane structure was built following the plans and gave no trouble. I was nervous about soldering on the airframe, though. The soldering was done with the structure mounted to a scrap of particle-board shelf material.

Mine had the red-and-white sunburst design, but the bottom was covered in solid red. This simplified the job and provided excellent top-to-bottom contrast in flight. The Miniplane rolls and snaps very quickly! I found the constrast helpful in keeping the pilot oriented with the airplane!

I'd like to encourage you to build one, I loved mine!