Lisa, there is a guy in alpine that has posted on ksl a flock of Silkies. He has 4 hens and one rooster. 2 hens are white. The one picture he shows of his white looks really good. I have been temped to call him. The one he shows doesn't seem to be bearded. Isn't that what you want for SG?
Fully bearded white silkies would be best for breeding, my roo is regrettably non-bearded so I would want bearded if possible to make the offspring have a better chance at bearded