I agree crowds will be close. The November dates will see an uptick due to Veteran's Day on 11/11 and may overlap with Jersey Week - something to look into because Jersey week is often blacked out for discounts. The December dates may overlap with Pop Warner which is only a concern if you're staying in a moderate or value.
Weather may be a touch cooler in December - we were there late November and it was cool. You will have the guarantee of all Christmas decor up in December, and will also get to experience Candlelight Processional which starts after Thanksgiving. I'd probably go in December.