I think you are trying to do too much at once! Add gradually to your flock. You have chickens, so pick the one next thing you want to add. Ducks are relatively easy and while messy, can live quite happily in a yard with chickens.
When you get where you are happy with both ducks and chickens, add another thing.
Expand gradually, one thing at a time. Less expensive and less headache.
That is kinda my plan, I am just thinking of the layout when all is done. I have ducks already, and they are GREAT!!
Im not planning on jumping in all at once, but hope to have what I want by NEXT winter.
Thanks for the 'calm down' post.