IMO, you should prioritize the following on your Yuletide tour:
- Wilderness Lodge
- Ft Wilderness
(these are both MUST Sees)
- Grand Floridian - gingerbread house
BW and BC are ok, but if you miss them, you wouldn't have missed a whole lot.
You'll get to see AKL when you do your Boma. The tree is fantastic.
Don't worry about Poly - not really much there to see.
Interesting that Dad may join next year. I think it's great, as I believe family time and making memories of a lifetime is one of the best parts of life. I know you're nervous about it changing the dynamic, but you know Disney. You can have your space when you need it.