Your list looks good. Don't forget a brooder lamp if you don't have one. I'd probably not get the pint feeder for the ducks as they will outgrow it FAST. I used dog bowls. Cheap and they don't tip over. Probably a puppy or kitten one at first or just a flat, low container.
For me, the $ store is my friend when it comes to ducklings. They have multipe size food storage containers, dog bowls, colored zip ties (for ID) etc, etc.
Good luck. Do read up a bit on their brooding needs. I think they take a little more work at first. For me, chicks would always eat really quickly. Ducklings, not always.