Disney will start to get really crowded about 5 years ago.... You missed it. There isn't really a down time anymore, and I don't expect the opening of Star Wars Land and Toy Story land is going to have a tremendous affect on the crowds more so then they already are - maybe just the distribution of where the crowds are in the park. The order you do things may change, but the crowds won't be any better at a specific month. Off months - even those based around events - are a thing of the past.