We currently have 2 cats both from the cats protection a 7 year old boy and 4 year old girl I would love a kitten to add to my family the 2 cats we currently have get on perfect but wouldn't cosy up to each other but do play together. Does adding a third work? I would love a kitten we can afford one vets bills food etc its more a will adding another be a issue from experience question. Thanks for yoir help