It does sound like your Carter is going to be a bigger Yorkie. Like Lori (daisy mae06) said "All the more to love". My Rudy was 4 lbs something @ 8 weeks old and now he's at least 15 lbs, probably more cause he hasn't been weighed in a while.
BTW, I think the name Carter is really cute.
I've never heard that for a dog before.