I'm aware : ) there's some people in my county who breed non crested showgirls though so those would be a little closer to what I'm going for, sorry for the confusion.
Oh, that makes sense. I thought you were saying that someone had "silkies" with no crests.
Using a silkie would give a few extra genes that are just not really necessary (even if hidden/recessive), like the toes, skin, earlobes, etc.
Extra toes should be caused by a single dominant gene. So you'll see them in the first generation cross, but should get some birds without them in the next generation.
I think the earlobes are "white" earlobes over dark skin. Probably several genes involved in each of those traits.
Sounds like your idea of a "cochin with a beard" is more picky about some traits than others--you don't care about egg color or comb type, but don't want a crest or extra toes.
Since you've said faverolles are close to what you want (except for size), then I agree they're probably your best choice.