How into Halloween are you? Late October is great if you're into Halloween, especially for the little one at Magic Kingdom.
Food and Wine at Epcot runs until around November 13 if you're interested in that.
November you're going to get better weather and decent crowds as long as you avoid Thanksgiving and one of the running events (this year it's Nov 1 - 4). Keep in mind that only some of the parks will be dressed up for the Holidays right after thanksgiving if you care about that.
The one thing I will tell you is that in the last few years we locals have noticed that there's not really a super low season anymore. The parks are always what we would consider 'busy'. Not crazy busy or anything, and certainly not like Holidays or Summer, but those days of going to Disney and walking on everything are long gone.
Hope this helps, let me know if you have more questions!