My favorite Christmas park is MK because they have such a diverse line-up of special things--MVMCP, Jingle Cruise Christmas overlay, Main Street decorations, Frozen castle lighting (have you seen it yet? It's gorgeous!), Monorail access to two gingerbread house resorts (CR & GF).
My favorite holiday activity is a tie between Holidays around the World at EPCOT and Osbourne lights at DHS. Personally I can take or leave Candlelight Processional. Visiting all four of the gingerbread houses is an absolute must and if you have the opportunity, visit as many of the other resorts as possible. The decorations are so pretty and are unique to each resort's theme.
If you're dead set on November, I would probably pick this week and/or next (assuming that Thanksgiving is late again next year). If Festival of the Masters is back at DTD, it has historically been the second weekend in November. Also you could catch the tail end of food & wine without experiencing too many days of increased park attendance due to the wine & dine half marathon. Another option would be to arrive at the very end of October so you could do MNSSHP and MVMCP in the same trip. They are usually separated by about a week. Just be prepared for a lot of other people to be doing exactly the same thing!
Though honestly, I would recommend traveling in December instead of November. The EPCOT festivities don't start until after Thanksgiving, so if you go in November, you miss out on the holiday storytellers and the Candlelight Processional. December is certainly more crowded than September or much of October, but as long as you leave by the weekend before Christmas, the crowds should have minimal impact on most of the days of your vacation.
The worst thing that we encountered crowd-wise in early December were the hordes of small football players and cheerleaders traveling in large groups for the Pop Warner football games. The cheerleaders were more of an issue than the football players because they seemed to be in larger groups and they skipped around the park chanting loudly with seemingly minimal supervision. Fortunately, the episodes were few and far between. This would not be a good time to check out the All-Star Sports resort.