It's not a stage race, it's ongoing, in a team you will be cycling 24 hours a day. Solo guys probably not much under that (they are the _real_ crazies!)
There is a 2,200km route mapped out and it is up to you to get around that as fast as possible. So how many days depends on how fast you can go.
It's modelled after Race Across America (RAAM) and I believe is a qualifier.
Accommodation and support are up to the riders to organise, as you are constantly moving forward I suspect teams may use camper vans, would be interested to hear what people did last year.
This looks like a fantastic event but to say the website is scant is putting it mildly.