Oh, wow, that's a lot! I am in suburbia with a smallish to medium-sized backyard, so 4 is probably pushing it for me. The Swedish is for one of my daughters, but she was having a hard time choosing between that and a Buff. I almost got the Buff for the 4th duck, but Welshies are supposed to be a little smaller, so in the event that they all survive, we will have less total duckage? That's the theory anyway LOL. I am jealous that you can order all those at once, but maybe you are right about spending more time with them individually anyhow. Since these will be pets as much as they are for eggs, I am hoping they will be social

I ordered from Metzer because they sold the sexed babies--since I can only have a few, it was important that they all be girls (and I didn't want to try to explain overly vigorous duck mating to my kids who are still pretty little).
We have a little rescue Mallard that I am pretty sure is a girl, but she hates me

She will be moving out soon to the big duck pen that we are building, so even if she isn't fully feathered by the week of the 25th, she can stay in her "halfway house" for a little while getting used to the great outdoors before she is turned loose. I think she will be though, they grow crazy fast!
I don't know when they will arrive--I was thinking Wednesday morning, but I suppose mine could be here as early as Tuesday since I am in California. I really need to find out which post office they are delivering to--I have the opposite problem you do, where there are too many post offices around here so I don't know which one to pick up at! Metzer could probably tell me if I call tomorrow--they advised that we call the PO and tell them to look for the live bird shipment.
Post Pics when you get them!