I think I'm going to have a go at this. I'm going to order PCBs from JLC, so I'll have at least 5 boards of each (there are two different PCBs for this project). If anybody else wants a set, let me know. I might be able to print some extra enclosures as well.
EDIT: after reading the entire build guide, I am having serious second thoughts.

I might give this a couple days of thinking, and then I'll post again.