There is no such thing as a teacup Yorkie. All Yorkies are toy breed dogs and should be between 4-7lbs. Check out this link:
http://yorkiepassion.com/Teacupyorkies.htm
I don't know of any breeders in Florida. You're thinking you might want to breed? Females need to be over 5lbs to be bred. If your male has a lot of medical problems like you said, you shouldn't breed him.