Unfortunately Fantasy of Flight isn't what it used to be , scaled down and not sure if the museum is actually open anymore , if not limited days of operation , mainly corporate events now unless its changed again - crying shame really used to be a must do..
Space Centre Executive Airport at Titusville , visit Valiant Air Command Museum,
Kissimmee Gateway Airport visit Warbird Adventures T-6 Flights and Museum
You should have timed your visit to coincide with Sun n Fun at Lakeland Linder Airport April 2- 7 you can get there in an hour from Orlando by car