My girls rule! The alpha next to me is just over 5 lbs and she is a terror. Our Teddy at 16 lbs + knows not to mess with her! Your only problem is will the boys be able to handle a girl!
I have 6 females and 3 males and the girls rule all the way....
I think the boys are more loving but the girls are more independent and tough.
You will love having a girl!!