@Kel_
Thanks for your feedback!
My plan is in line with what you said, sorry if it's not clear!! I would eventually get to the case pictured, not in one go!! HeHe!! :)
Step 1 is, therefore, to get the Cs-L going with Maths, Wogglebug, and the 1U Interfaces Pedal I/O, the I/O in and headphones and Quadratt for extra mix+ attenuverter duties.
The 4ms Mixer+Output should come along also, cause... yeah, output and mixer! Or do you mean another kind of mixer?!

The Arbhar would be there precisely to get some ambient sound mangling, noise, different drone notes, percussion sounds, etc.. So I could create different tapestries above or under which the Cs-L can develop, change and do its magic. Does that make sense?

I'm glad I found a direction, and I'm also glad I asked you guys!! Going slowly and getting to know a couple of modules, before diving right in and be overwhelmed! Difficult, but I'm getting stronger! ;)