Animal kingdom was one of my favorite parks, Everest was not complete when I was there last but it is a true gem for what Walt had in mind. The best referance for planning your trip is a book I believe is titled Secret Disney World. It may ruin some of the magic but will give great insight to your trip.
Unless you are going to be there for at least a week, don't try to do everything. You'll just burn out. Get a book that describes all Disney has to offer, and choose the things that match what you enjoy doing.