Because I don’t think January is a particularly good time to stay at BCV, (I bought BCV To use SAB, I own BWV to be close to Epcot) I would wait until 7 months and use other points to try to stay at BCV, and save those points for a more likely to swim WDW vacation.
That's a good point and makes a BCV reservation in January at 7 months even easier. And if you don't get it at 7 months, waitlist, the chances of the WL to succeed are very high.