oh yeah! i almost forgot! 4 months old is a wonderful age to get a kitty at;especially if you plan to show. at four months old he should be very secure and well nourished (if you get them before they are fully weaned you can have a life time of problems). he's young enough to be socialized for shows so just keep introducing him to new things. i'm sure he will be the kitty of your dreams and bring you many WONDERFUL memories.
ps-ask your breeder if she shows and what her methods are. breeders, if willing, make excellent mentors because most have breed specific knowledge and that is what you need more than anything!