Define "better", and define WHEN in November. DVC resorts operate on a the premise that they will be at or near 100% occupancy at all times. This is true of most timeshares. It helps keep the maintenance fees down for the owners. Much of November is still Food and Wine, and the end of November has the
MNSSHP which is a BIG draw for DVCers. Do you have a December use year? If so, you have to use the points prior to November 30. If you are concerned about the possibility of needing to cancel the trip, then I guess I would go for an earlier time that would allow me more time to rent out the ressie, should I be unable to use it.
For What it's worth, we are pushing 60 (DH is already there), and while health issues are always a concern, we don't every "plan" on having our trip interrupted. We plan as if we will always be fine. We have had health concerns come up, but on those times, I rented an
ECV and took in the parks on wheels instead of feet.
With the exception of September and to a lesser degree January, DVC resorts will be busy most of the time. Some of those times are popular enough with owners, that they need to be reserved at the first possible date in the 11 month window (holidays and the first 2 weeks of December as well as F&W). If you are thinking in terms of this year, you need to nail down a date and get your reservation ASAP. As it is, you might not have a lot to choose from if you are thinking in terms of one of the smaller DVC resorts.