I agree with the others that once the newness wears off you will have a decent chance at most rooms/views at the 7 month mark. However, depending on developer points and any other incentives they offer to complete the sales it may be a year or two before you can get availability without having to waitlist.
One would think that the 7 month window would be available because of the resorts size but who knows.
It will be interesting to see how much the Towers pack the monorails. The monorails are already packed on any given day, now add a couple more thousand people to them. I guess they can add a train but we'll see.