If you plan to vacation in October on a regular basis and want to stay at BWV, buy the Boardwalk resale.
As already noted, October is a busy time for BWV & BCV. The EPCOT resorts are highly desirable places to stay during the Food & Wine Festival. That makes October one of the more difficult months to book at the 7 month window. It is very likely that you will have to use the waitlist for at least some of your days if you have to wiat to book until the 7 month window.
If you are comfortable booking OKW at 11 months and then using a waitlist at the 7 month window for BWV, go ahead and buy OKW. As noted, it's a beautiful resort and dues/point requirments are lower there.
If you drive to WDW and/or wouldn't mind staying at OKW if the waitlist doesn't come through, I'd recommend OKW for sure.
However, if you fly (like we have to do) and need confirmed lodging dates early on to book decent airfare, then buy at BWV. IMHO, you'll be disappointed / frustrated by the October waitlists more often than not. They may not come through until close to your departure dates or you may end up moving in the middle of your vacation.
Keep in mind that if you can plan 11 months ahead of time, you can book standard views, which are almost the same point cost as OKW. The BWV dues are higher, but unless you are buying a large number of points, the difference is not significant.
My vote is to make your wife happy - you'll have a much better vacation if she is staying where she wants to stay!
P.S. I'm a BWV owner who has yet to stay at any of the other WDW
DVC resorts. Just can't bring myself to give up that wonderful location - the ability to walk to EPCOT and the Studios is a HUGE benefit, as is the proximity to many good restaurants, ESPN, JellyROlls and the other Boardwalk nightly activities.
Best wishes -