This question hasn't been answered from what I've been watching. I think its a question for your Guide or MS if your already a member. My guess is that you could use them pretty much right away as from what I understand normal booking, 11 month/7 month don't really apply when using points outside of the normal
DVC resorts. So, I think if you wanted to use your points for a cruise next July that you could probably do it right away, the same may apply for other Disney resorts, but as stated above, check with your guide for the official answer.