At first, my wife didn't want me to get very big. When I was 180 lbs, she thought 200 lbs would be too large. But as I grew, she liked the muscles that started to grow. Now, I'm 225 and she's not complaining. She still is bothered by the idea of my getting to 250 lbs or larger, but she's more open minded about it... and really, it's not like I'll ever get to Jay Cutler size, and I think that's what she doesn't like.
So watch your wife's opinion change. She might not want you to get big now, but when you start really growing, I'll bet she'll like it.