Some observations.
I think the host requirements have a really dry humour running through them. I wish I could help, but I don’t have a spare room.
I have a (post-war) Record Ace. I’d rather ride it over 200 miles than a carbon bike. caveat – I’ve never ridden 200 in a day, although I have done 140.
Personally I’d do as terrahawk suggests, but work out half a dozen routes. I did 100 a day for 2 weeks once, point to point. I was weeping for my own bed by the end.
The very best of luck to him.