Hey, I don't know much about this, but I'm doing the TBP as well. I am going to do a century at altitude on Saturday, recovery ride sunday. This charmichael book I'm reading says you are supposed to reduce the training volume starting 3 weeks before the event, but keep up the intensity - short hard rides.
Definitely I would rest or do very low intensity rides on Wed-Friday.
Where are you going to stay?