Riddle me this, Batman.
What's the scope of "fully understandable?" How much of this home PC could be reasonably audited by individuals or small teams?
I've got no exceptional opsec needs as an individual, but I spend some time wondering the minimum required resources to audit a PC. Looking through the docs I see cases where there are multiple suppliers for a recommended part -- that's very cool!
As a "fake programmer" and web jockey, this looks like the right balance of complexity to learn with.