Congrats on doing this, it looks amazing!
I've seen a similar design but cannot find the link right now. They used belt driven tail assemblies and a dual motor setup on a sort of planetary gearing in the middle. Could have one motor fail and still fly.
Dumb question I guess, does the OP code have support for inverted flight on VP airframes?
Yes I did came across a couple of sites before and both are using 2 motors. That's motivates me to make the single motor system.