You've selected a lens family, but choosing which focal length to use for each shot is an art in itself. A few things to consider when choosing your focal length are: proximity of the camera to the subject, whether the camera is a character in the story or purely observational, and whether you'll be using the lens to control the subject's perspective and their relationship to the background.

A lens is a lens is a lens, and it doesn't know what size sensor or film gate is placed behind it. A lens projects light and the magnification size of that projection is determined by its focal length.