I’d think 10/1 is a reasonable opening date. We’re not talking about a new ride that needs summer numbers to be “successful”. Shanghai Disney, for example, was originally supposed to be late 2015 but got delayed.
This is a new park. It could open any month of the year and be just fine. What I like about 10/1 is it would make since to go dry park on 10/1 and next water park on 5/1. Good stagger and almost opening them simultaneously while getting the tax benefit.
If 10/1 is truly the date- I’d think park, parking, backstage, 3 hotels
Then by the next year around summer would be water park, 4th hotel, and whatever project they didn’t finish for 10-1 for the new park (like UniCorn/Stormforce for IoA or Kali River for DAK).