I know exactly what you mean! This is not set in stone, but I can tell you that we are also going Oct 7-16 and those hours were posted on the Disney site about 2 weeks ahead of the 180 date for us so I was able to decide where to go what day and what ADRs we wanted in plenty of time before I could make the ADRs. I called and made them all at once the morning I could do them, and got everything I wanted. For the Nov 28 - Dec 6 trip I have already used the PDF for a tentative itinerary and will check it against the Disney site when they come out, hopefully SOON, and on June 1, I'll be ready! We also plan to do a tour and
MVMCP.
What are your dates in December? For me planning is a lot of the fun but like you I feel better when it is all nailed down.