Snapmaker U1 Rear-Mounted Filament Feeders

I designed a model that basically lets you vertically mount the filament-feeders to the back of the U1! My plan is to have the printer be in a little enclosure (probably from IKEA) and the Creality SpacePi X4 below it with the four spools being connected to the feeders via PTFE-tubing.There are a few requirements though:You need to extend the feeder-cables. I have extended mine by 30 cm (with lots of patience, soldering and multiple attempts) and it works really well, but obviously doesn't l