The land takes a lot of it's cues from the book not the movie. In the book, there were carni games and the main attraction was a boat ride. Also the John Hammond in the book was a lot more cynical and a lot less "nice grandpa".
How I would deal with Kong is put up a JP Arch across from the Toon Lagoon sign and put a park map/you are here directory showing "Jurassic Park" that shows all the attractions, restaurants, restrooms, etc. and have Skull Island Reign of Kong as an attraction in the park. There is an homage to Kong and he is mentioned by name in Jurassic Park. Spielberg has said that the giant wall/gate that inspired Malcolm to say "Geez! What do you have in there? King Kong?" was an homage to the giant wall in King Kong.
And thus Jurassic Park Isla Aventura becomes one of the best theme parks in the country with Jurassic Park River Adventure, Raptor Rail, Skull Island: Reign of Kong, Pteradon Flyers, Camp Jurassic, Raptor Encounter, Upgraded interactive Discovery Center, Winston's Chop House (formerly Thunder Falls), Hammond's Verandah (Lounge on the covered patio area of Thunder Falls overlooking JPRA) , Burger Digs, Carnivores and Herbivores (Formerly Pizza Pretoria; Pork Shanks, Ribs, Kababs, Hummus, Veggie Wraps, Salads), Pandora (formerly the amber shop) and Margaritaville Outpost (formerly The Watering Hole).