My understanding from MS is that what ever resort your have purchased into entitles you to the 11 month window for booking. But the kicker is that what ever resort you choose you'll need to have the points need for you stay within that contract. So so you have 100pts at BCV, 50pts at SSR and 50 at AKV. you could book a stay at SSR 11 months out but only up to 100 pts (borrowing from the next uy) and not the lump sum of your 200 points.