I have always loved Pirates of the Carnibbean in the Magic Kingdom...Don't forget space mountain and the other roller coaster right across from there. Also, splash mountain if you want to get wet...
We loved "Soaring" in Epcot, "the land" and build your own car. In Animal Kingdom, be sure to do Mt. Everest and the raft ride. At Hollywood, there is the Tower of Terror and the Aerosmith roller coaster. Some of these, you may want to get a fastpass and avoid some waiting. We were lucky and walked on most rides, lots of kids under the age of 5, but school is still in session, so not many older kids, tons of strollers....I am sure I am forgetting a few, just allow plenty of time.
Be sure to catch the fireworks at Epcot at 9 or 10. We also caught the fireworks at Magic Kingdom that they pipe in the music at our hotel across the lake, was great.
Have a great time, hope for good weather, pack a cheap poncho, they come in handy.