I agree that, in theory, KFP could sustain a ride (or even a land) in Florida. My concern would be that Universal would just clone the ride from Beijing... and I don't want that ride! If it were an entirely new concept, I'd be on board.
Of the DreamWorks franchises, my preference would be something from the Shrek universe. Ideally PUSS IN BOOTS: THE LAST WISH. Not just because its story and visual approach would naturally lend itself to a dark ride... but also because I think it's one of DW Animation's very best films.