The main characters are finely drawn and compelling, the story likewise. Even minor characters get their hundred words of description. Nobody is a throwaway in this tale. Except, perhaps, Kya.
BUT...if you are the type of reader who compulsively sneaks to the last page of the book and reads it, you may as well not read the book at all. The pacing in this big story is complete, right down to that last paragraph. I urge you to resist that sneak-peek urge.
This is a 5 for me.