I think you have a lot of things going in your favor. The Yorkie is older. At 12 months, still very playful, but not as much so as an unrelenting younger pup. The Yorkie is also used to being around cats which is good. As long as the cat can get up and away from the dog, and the dog is not get between the cat and it's litterbox/food, I think you'll be fine. Cats are generally social and inquisitive creatures. There will obviously be an adjustment time for all, but I think it can work.
__________________ Shelly and the girls  Moka Mylee |