Scott,
A friendly East Coast warning:

Disney World is HUGE compared to the California park. Better plan on a full day to see any ONE park. The Magic Kingdom alone in Fla is bigger than the ENTIRE park in California.

My recomendations for MUST SEE events:
(unless little kids are involved)

MGM (Rockn' Roller coaster is AWESOME)
EPCOT (A world in itself)

I try to get down that way in February when my "Snowbird" parents are in St. Augustine. You guys are sure to have a great time - sorry I have to miss it.