I'd have just said it will still be whichever ones I grab first, and it will be weighted heavier towards males then since I'll probably pick some out to keep at that point. I've actually said something along those lines before with people that keep pressing
It would at least save on the heavy duty physical part of building new shelters. But I don't know if pricing would be worth it. Shipping here makes them all far too expensive to really even consider
If you find any, see if they do veal. If they do, they might have old shelters that they want to get rid of or know where to find some. They look like they'd be great for small duck groups if you add a fence pen around them