Even if what you want is not available now, it might become available at 7 months -- these who own there have booked, then switch to a different resort when they can. Several times, I have seen availability open and close and open again over the span of a day or two. If you know you want to stay at a
DVC resort, booking your home resort then looking for availability at 7 months is a good idea -- but only if you would be happy in your home resort if you could't switch.