if you get a kitten before a certain age so the younger the better beng with a rabbit will take away its urge to hunt. i have seen pics of adult cats with mice running all over them because they have been introduced at a young age. jsut supervise the kitten at first and the rabbit as they can be just as curious! should not be a problem. my cats used to touch noses with my pet rats!
should be fine, maybe the week before get something that smells of the rabbit for the kitten(s) to scent and something that smells of the kitten(s) for the rabbit to learn so both will have meet the scent before so be familiar and not frightened by it.