Just caught up with your build... It's going well!
One thought: Depending on how certain wiring, cables, etc
need to be either "stiffer" (cables, brake lines), or "softer" (electrical etc),
I have begun using lead wire, painted flat Nato Black. Brake lines and clutch
cables are heat-shrunk and stretched 1.2mm TopStudio shrink tube.
Sometimes it's nice to have a wire stay put, and easily bent
into position, and laying naturally, so I use lead wire in that situation...
You can buy it in tiny diameters at fly-tying shops.. 010" 012" 015" 020" 025"
I learned this from a local friend who builds 1/35 Armor vehicles.
Enjoying your work!, Marco