Well, the week you will be visiting, there are a few events that will make the parks pretty crowded, for that time of year.
1) Jersey week is the second week in November this year. You will be sharing the parks with LOTS of NJ folks.
2) Epcot Food & Wine Festival will be finishing up that weekend... so there might be extra crowds there for the "last hurrah".
3) Super Soap weekend will be that weekend at MGM. It will be pretty crowded, but most likely, most of the folks there will be lined up to greet the actors. You will most likely be able to ride things with not too long a wait.
4) Veterens' Day is also that weekend- so there might be extra people there for that.
We went last fall during Jersey Week, and IMO, it wasn't that bad. As long as you make a plan of attack and get to the parks early, you should be able to do most everything you want. Have a great time- we will be there the week before you.