Hey, this is one of the craziest fuzzes I've ever seen. I started a Vero and realized I'm not competent enough to do it cleanly and without mistakes. I got to the second J201 and saw things started to blur lol.
Lots of pots usually means lots of wires, it would look like spaghetti and probably oscillate.
A good pcb layout with board-mounted 9mm pots would be better than veroboard in this case. Maybe Madbean or Aion FX might be interested?
It may be worth it to break it down to its stages; the boosts, Muff, octave, etc with clipping options. Here is an earlier, slightly different schem. from their Facebook that they labeled for clarity.
If you have an Electra, Green ringer, and Muff with clipping switches, test stacking them.