As you wish.
I've been breeding them for years, and it doesn't particularly matter. They will occasionally go broody, usually ALL 15+ or whatever at once, but it's rare. It brings down the egg numbers. Khakis are supposed to be like leghorns. And out of the ones that go broody, I have yet to...
Khaki's also don't sit much-maybe, maybe in the spring. Good strains don't sit at all. I'd wait for that muscovy to grow up and she'll make you more ducklings out of the khaki eggs, but that's just me.