Just wanted to add how I manage frequent BCV stays with only 125 BCV pts (not all pts even the same UY). I also have 150 SSR pts and 60 VWL pts. I am a serious vacation planner so, nothing last minute here. I am also a bit of a risk taker.
I determine how many nights I can book at BCV/the room category (usually a 1BR) I want and book with my BCV pts as many nights as possible at the 11 month window. Usually, I do not book Friday and Saturday nights. Then the very first possible moment at the 7 month window, I fill in the rest of my missing nights.

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This will not always work but, I have been very lucky.
Tips: I would book a Saturday night if it is SW week- ends. The one time I would never want to wait till the 7 month window to book is during the F&W festival. My family also likes to do split stays at different resorts so, we are flexible if I can not get all my nights in at BCV. I have not tried to book BCV during December.
Good Luck.