With the Silkieds I'm working on getting black, so I have a way to get other colors. I'm right in that aren't I? I eventually want Lavender, so that was my reasoning. Maybe I should just stick to BBS and forget it. LOL I'll be happy with some of the right feathering. Once I get some to work with I can go from there.Sonoran's right about the inability to know what the boys are if you do leave the Black hens in there. You should leave them out for at least a couple of weeks and get a batch of eggs you KNOW will produce split and Choc boys. That's your fast track.
On the Silkieds, you should wait to work toward Lav until you have a Silkied Black, either gender. You want to know that all of the offspring are split to Lav, split to Silkied. If you have a mixed population and have to put splits together, you could lose track of the genes and have things crop up later you don't mean to...and worse, you could lose the genes you're working to infuse, because split to split also creates bird who get nothing from either parent: 25% express, 25% devoid, 50% split.
When you think of your B/B/S, you could really just match them up any which way- what colors do you want to produce?
The chocolates have nothing to do with the Silkieds, but I need to get more. I'd like those to be Silkieds eventually too, but they're bantams, so that's not anything in the to near future.