Should be between 5-7 pounds, and i'm leaning more towards the 5 side. My most recent pom purchase Vanna who i'm pretty sure you saw the pics of, was 2.1 pounds at 8 weeks old and 2.4 pounds now at 10 weeks old, she is expected to be 6 pounds as an adult. My first pom was 3 pounds at 12 weeks old and is now as an adult 6 pounds even. So you can see that the estimate is never perfect. But i would not expect your puppy to go over 7 pounds unless you over feed.