Rhodes came to Crockett in 1984/85. Windham and Rotunda didn't head to Crockett until around 1986/1987, when Florida was pretty much on its ass anyways. Rhodes, even with Crockett, had a financial stake in Florida until Crockett bought it in 1987.
Windham and Rotondo were in JCP prior to the WWF run in late 1984/early 85, so yeah they went with Dusty
What years were they there? Windham started in Florida around 1980, worked in Knoxville (Which Mulligan had an interest in as did Flair) before going back to Florida. His last Florida reign started in May of 1984, and he along with Rotondo was in the WWF later that year. I'm not saying he didn't work for Crockett in a one-off type of thing, but just looking at Windham's history, I don't see an extended period where he was with Crockett before '86.
Not sure how long they were there but prior to Starcade 84 they were at JCP TV tapings wrestling. Would've been longer you assume had Vince not come calling.