Barring problems, the time is somewhat pre-determined - in both the coach sale and the general sale traffic will be drip-fed onto the site at a lower rate than the site is capable of handling, and the anecdotal evidence suggests that they've throttled the coach sale substantially more than the general sale in the past.
Trying to do a direct extrapolation isn't going to work.
No idea if it's likely and they're definitely not one for me. I think I mentioned earlier in the thread that I gave them a go based on recommendations on here but I don't get it.
That said they're absolutely big enough to headline and would make a lot of people happy.