I think you're panicking. There is no way I'd pay $2000 RT (assume PP) 11 months out. Those dates aren't even open for Delta yet (will be in about 4-5 days). Heck, I wouldn't even open up a new CC.
Use Google Flights (google.com/flights) once the dates are available. Set up alerts. Check yourself every couple of days.
Some tips to possibly save money...
* Fly during off hours. In your case, I'd look for leaving Friday night (whatever the last flight of the day is). Get a hotel room near MCO for the night, then go to Disney the next day.
* Be willing to make layovers (yes, you have one listed, but for others, don't lock into a non-stop as a "must have")
* Be willing to look at different airports. These are all within acceptable distance IMO...
Look into flying into Tampa, Daytona, Sanford, or Melbourne in Florida. Just know your transportation from the airport to Disney will be more complicated/expensive, but may be offset by flight savings.
Is this a lot of work? Yup. Is it worth it to save possibly $1500-$1700 pp? ABSOLUTELY!
I start getting a little nervous six months out, and would want to be booked by three months, especially if it's a large group.
Ignore anyone telling you "book at a certain time of day", "book on a certain day of the week", "book at a certain number of days from your trip". The simple answer is "book when the cost is acceptable (that doesn't mean you're happy with it)."
I'd also look at Amtrack. Yes, it would take over a day, but for two people was only $880, and that's with a roomette for the NY <> Orlando.