You can always book 11 months out at your Home and 7 months out at other resorts. You just need to have the points available when you check-in. So, to stay in Jan '06 you could have called in February to book your Home resort, but need to wait another month to book another property.
Just remember that the borrowing of the points from one UY to another happens at the time of the reservation. When you call, they will move the required number of points from your October '06 to your October '05 UY, and the points will stay in the '05 UY. Even if you have to cancel / reschedule that January trip, the points stay in '05 and must be used no later than 9/30/06.