Are you unhappy with the square footage?
I was reading a blog recently from a
city dweller who had a small lot and wanted to put in a garden. Anyway, I looked at those photos (it was a small
yard), but the thought came to mind that if they put massive
berms in, that it would have acted as a gorgeous privacy border as well as potentially doubling or even tripling their available space. So many people have been taught to think in straight lines and flat surfaces that it's hard to think in more dimensions.
A thought on your
wood scraps... worm bins? Build an outside framework out of the wood, but also put untreated scraps into the bins themselves (
hugelkultur style). Uh... see that you have
chickens, may want to do some slats over the tops to protect the worms....
Just an idea.
Your project looks like a fun and rewarding project.