I would do a split. 7 days at BWV standard view if you can get it, then OKW. Food & Wine festival started in July this year, so probably the same next year. I personally love The quiet pool at Boardwalk and also the nice pool on the Inn side. We visit Epcot in the mornings and then chill at the pool or do some shopping ( so many options all around the lake) or dining (Flying Fish if it ever reopens, Swan and Dolphin, Yachtsman Steakhouse and Epcot). Hollywood Studios is a once and done for us. 7 days at OKW to chill and spend time at Disney Springs. It is such a quiet and beautiful resort. Charcoal grills by the pools, parking right next to your building. AK is nice also, and has a nice community hall and gym, but for us it gets a little boring. Plus food options are limited. SSR is nice also, but I think it is more points?
Sounds like a fun thing to plan. And your Christmas trip sounds grand.