Yeah, that's exactly how I'd think about it.

I actually think that usually, books should be turned into TV shows, not movies. A thousand pages of book translates into approximately a thousand minutes, so making a movie requires you to gut the book down to the equivalent of 200-300 pages, whereas making a tv series would allow you to actually flesh things out further, giving the director time to actually do something interesting with the material. I firmly believe Harry Potter should have been a TV show, not a movie. At least from an artistic, if not economic standpoint.