I would suggest you read the "sticky" sections on this forum. The library is a very good way to learn more about Yorkies. They are terriers and tend to be stubborn at times. They can be difficult to train because they are high energy and strong willed. Personally, I have found it to be a good challenge for me but others have found it to be too challenging. I have trained dogs all my life and yet had to change my methods to train Graice. The personality is something you need to consider if you are worried about "diva" syndrome.
I never thought about dressing my dog but found that Yorkies have no undercoat and tend to get cold very easily so they do need help staying warm and well one thing leads to another. My home is warm but in the winter floors can be cold for a dog so close to them.
There is a Yorkshire Terrier specialty club in your state. Specialty clubs are great places to find people who know breeders. Some of these people travel all over the country to show their dogs and they know a lot of people. You still need to check out the breeder but at least you have a better chance of finding a good breeder.
American Kennel Club - Yorkshire Terrier Club of Southeastern Michigan - ROYAL OAK - MI - 2457
It is unlikely you will find a good breeder doing google searches as they usually only bring up puppy mills. These puppy mills disguise themselves as lovely places that spoil their dogs but they are puppy mills. Since you are willing to take your time with this purchase just wait and make contacts with reputable breeders.