I doubt I would be able to get a male/female pair, probably one or the other. I would cross with regular feathered cochins, then breed breed offspring back to them to get silkieds. Should I try to keep colors pure, or do you think I should just mix them?
I would say it depends on what your goals are for them. My goal with mine is preservation of the variety and to breed them to the standard with the hopes one day they could be accepted in alongside frizzled Cochins as a variety of the breed, so I opted to only breed them in pure colors. I might end up mixing varieties in an attempt to 'silkie' more varieties of Cochin bantam sometime in the future, though. And a fair number of people also just keep them in mixed color pens just for fun, and that's perfectly fine, too.
