To me it is one of the best months to go. You are also avoiding the Soap Opera Fest with those dates, that can be very crowded at Hollywood Studios.
If you have a great deal being offered, go for it!! Yes, you will need a sweatshirt at nite, but sometimes you need that for just the A/C.
The crowds can be questionable at any time, you just never know. Things have changed dramatically over the years, there used to be distinct slow seasons, not really the case anymore. I still feel you will do well with the dates you have, jump on that good deal!!!!! Also enjoy the food and wine fest, very fun to dedicate one day to munching and trying the foods around the world showcase. You will be there toward the end, so it should be fine.
Never a problem anyway. I have always made that my dinner for one day and just walk around trying things, will cost about the same as a decent sit down meal and it is FUN! Have a great time no matter what you decide.