I testet printing with 120mm/s and travel 200mm/s. The result was good. Absolutley no wobble.
The spool holder is an improvised solution from my old A8.
The arms are something like this: https://www.thingiverse.com/thing:1728524
The Axis I have designed by myself, but I dont have the files anymore. It has two different diameters for different spools. Maybe I would create a new version.
You also need a 8mm threaded rod.