Sounds like you've got your feast figured out
Watergate salad is close to my molded gelatins -- basically pistachio pudding mix and pineapple.
https://simplysidedishes.com/easy-wa...e-jello-salad/
Now, despite my earlier protestations about making crowd sized jello brand building projects -- I can make a reasonable sized small jello from green jello and pineapple, I like to add the bit of chopped nuts and celery.