If I was looking at how USJ closed Spider-Man, the takedown of elements was near instantaneous that had the branding represented. I'd assume the time of dismantling the thematic elements of Springfield will be much more intensive here compared to Orlando, where I think we see the land close well before the contract end-date. That way, they can legally wipe their hands clean of The Simpsons.
as for other things, I wonder when construction starts on Park Lake; if they follow a similar construction timeline to that of Barham (and if that then affects productions nearby the already built soundstages).