I've decided to use 1/8th nylon tubing for the brake line. That is what Matco recommend for that kind of installation and after asking another builder (Marin Streeter)who used the same and is satisfied.
I routed one straight tube from the master cylinder to the caliper. No joint, elbow or fitting. I'll insert the 1/8th tubing inside a 1/4th nylon tube for extra protection and attached it to the landing gear with clamp. I also put grommet where it enter the cabin. For the moment I only install the 1/4 tube. I'll put the 1/8 tubing when I'll be ready for the final installation.
