There are some top breeders in your area - So. Fla. Just go to YTCA (Yorkshire Terrier CLub of America) and contact the Gold Coast Yorkshire Terrier Club - they have members that breed and show yorkies. Best of Luck!
The YT members are correct about no such thing as toy or teacup yorkies. Some are just smaller than others. Also they are right - breeding female is best from 5-7 pounds. Good luck and do keep researching. You'll get better at it!
T.