The chicks/ducks can learn how to use the nipple waterer simply by you. All you need to do is tap the waterer so a few drops come out and once one comes and inspects it and tries it for herself, then all will follow :) Also, DO NOT use the same feed! Ducks and chickens are completely different...
Sounds fine to me! My suggestion: Cardboard boxes boxes boxes!
They are disposable, you can add onto them,AND you're recycling! Just place a trash bag on the bottom and add a bit of sand and then all you need to do is scoop out the sand and rinse the trash bag! Also, the ducks tend to pick on...