I think we are doing November, also. We have been once before in November, and we love going to the GF to see the decorations - especially the huge gingerbread house.
For us, it is easier to bring a 15 month old than a 2-3 year old. No potty training issues, no complaints about what she wears (from her, anyway), and very little talking back.

15 months can be a great age at Disney.
We really like seeing the decorations in all the resorts, especially AKL, GF, and WL. I enjoy visiting the Poly and walking around outside with the tiki torches lit and Hawaiian Christmas music playing. Very relaxing.
Of course, most will say Osborne Lights are a must do, but when we went Thanksgiving week a few years ago, it was insanely crowded. Elbow to elbow. I would still say go, because it is special to see, but be prepared to be rammed with strollers (and perhaps inadvertently do some ramming yourself). Be patient, too. I heard so many parents yelling at their children out of frustration and stress. The night we were at HS on a Monday during Thanksgiving week was the most crowded I have ever seen a Disney park.