The 7 month window for February 2013 opens in July 2012. If you can't book until August 2012, you may not be able to get into the BCV. BCV is very popular and there will be lots of members trying to get in as soon as the 7 month window opens.
The first two weeks are usually easier to get than the last two weeks.
All that said, you never really know about availability until you book. Don't be afraid to book your home resort now as a back up and if you aren't successful at first, waitlist and hope for the best.