I had wanted a Yorkie for years and when it was getting close to when I would be able to get one I started reading a lot and thought...oh no I had no idea <insert negative stereo type here>.
I almost did not get a Yorkie. I had another breed picked out and then it finally came to the time to start my search and I just said you know, my Mom's dog is a Chihuahua and there are a lot of negative stereo types about them as well, and he did not live up to most of them (he is a couch potato! hehe).
Anyways at the last minute I changed my mind and I got my Yorkie. I am sooo glad I did. I've only had him a little over a month and already I can't imagine life without him and I didn't even think I wanted another pup yet!
The one thing I was afraid of the most was the snappiness...but Toby so far loves everyone and to keep him feeling this "love" I make sure I take him lots of places and let him get to meet lots of different people.
I wouldn't worry
I think you did the right thing!