This is a hot topic on this board. Many people on here are very against cross breeding.
That being said, I have a yorkie poo.. he is wonderful. His mom was a 4 pound toy poodle and his dad was a 4 pound yorkie poo. Other than his coloring, he looks and acts just like a yorkie. His mom had 3 pups, one died 2 days after it was born. If you decided to breed I dont think that your female would have more than 2 pups. I have seen alot of yorkie poos and they all look diffferent. Tuckers brother looks just like the mom but different coloring.
Its a tough decison that really only you can make.
Good luckl!!
I have pics him from the time he was 1 day old if your interested to see what they look like.