Why is Descendants a higher priority than this? I need this movie. Please.
Also, don't try to squeeze two books into one. Us Fowlians (or whatever the heck our fanbase is called) will gladly pay to see all eight movies, so you needn't worry about expenses.
But if this takes so long that I have to drive grandkids to see it in theaters, you're going to get a talking-to, Disney.