I would have neither the patience, tenacity or persistence that would be mandatory in order to take on such a claustrophobic build! 'Faaaaar too frustrating for a short-fused ole goat like my own darned self to even think about attempting!
By the end of the first day, I'd be a stark raving lunatic...if it even took that long.
Fergiddaboudit!... ;-)
My hat's off to the builders!