would you not concider getting your boys fixed? i dont know, but would there not be a strong possibility of the boys developing dominance issues if they are both intact and a girl comes into their home? it would be terrible if your boys started arguing over the little girl! and if they were neutered then there would deffinately be no whoopsies (one of my girls went into heat at 4 1/2 months)to worry about!
they do deffinately love to have a cuddle buddy for when mommy isn't around