Exactly why I loved the 90 days and wasn't a fan of the 180. I hate having to guess at my schedule and then readjust as the date gets closer and things get changed around.
When it was 180 days previously, they did release the schedules earlier, fortunately (or so it seemed?) but things got changed around so much as it got closer to the actual date that we did have to hope our ADRs worked out to our schedule advantage in some cases. With 90 days, you're closer to the travel time and the parks schedule is more set-- though there are sometimes changes in the last month anyway.
Last trip: Dolphin, March 2013
Past Stays: Contemporary, Grand Floridian, Polynesian, Beach Club, POP, POR, Dolphin
1990 August Honeymoon - Grand Floridian
Delighted Disney Return Guest since 1981