There is one good reason to consider shooting 30 fps or 60 fps. With those shutter speeds better slow motion is possible. 24 FPS doesn't produce enough frames to warrant slow motion, while 60 fps does. Why slow motion? This effect can often yield a more "dreamy" look.
But the previous response is correct, movies have been shot for over 100 years at 24 fps. Just be careful how quickly you zoom or pan, as 24 fps can look jerky if the camera moves too quickly. If you can find a copy of the American Cinematographer's Bible, there is a whole section devoted to motion and frame rate.
With respect to interlaced and progressive scan, I'd recommend making some tests at home before venturing out to see which you prefer. I've been shooting video for 31 years professionally and we only had interlaced as the choice until a few years ago. I'm glad to have the choice. Interlaced footage can smooth out fast motion passing through the screen, but comes with some issues. Since each interlaced field records only every other line of the picture, freeze frames will display jagged lines where the subject has moved across the picture between field 1 and field 2. For that reason, I am happy to have the option to use progressive material and prefer it for most subjects.