Hi Luciano,
I hope you will soon become a member of the Disney Vacation Club! It has been a wonderful experience for my family.
I love the Beach Club! If I could choose any home resort, this would be it. I own at both the Boardwalk and Saratoga Springs. I think since I joined DVC, I have only had one of my requests not honored. I also do not always book at the 11 month window for my home resorts or the seven month window for another resort.
Unless you are looking to go on vacation during Christmas, Thanksgiving, President's or Easter weeks, you should be able to get Beach Club or any other resort at the seven month mark. Again, it is all based on availability.
Also, if you are flexible with your dates, you should have no worries either.
Wishing you a magical vacation!
Beth