AKV concierge goes fast at 11 months out. Value rooms also often book up fairly quickly during 11 month window. You also have a risk of being blocked out of AKV savanna and standard view if you do not use the 11 month window for days during mid-Oct, Thanksgiving time, first two weeks of Dec, and Dec 23 to Jan 2.
Then you have the issue of the 7 month window, when members from any resort can reserve another. Even for times of year when AKV is readily available at 7 months out, there is a risk it can disappear quickly after that window opens. Thus, at 6 months out, you could find AKV blocked at some times other than ones I mentioned above.