You shouldn´t do that for a movie. If it is story material from the manga then K-F is worth the wait at least to me because I´ve already had enough with bad scanslations so I don´t need that again in the anime.
But for a movie which no matter how good it is just isn´t the real deal there really is no need to wait that long. I have it from balf and it is good as it is. Of course the moment when K-F gets there I will download it and delete the balf version but until they get that far it really is good enough. IMO you shouldn´t wait for K-F on the movie. Reserve your patience for the anime where it is needed.