Born & raised in central Florida east coast. My favorite time is from early October to mid November, typical days are in the 80's nights 60's. There are very few tourists, kids are back in school & our winter friends have not showed up yet. You can get in to nearly every campground including most state parks. Lines at all restaurants & theme parks are the lowest of anytime during the year.
I am in the hospitality business so come whenever your schedule permits & just plan on leaving us lots of your money
Enjoy!