wow that link was like ritzville!
You gave me some neat ideas, I'm going outside today to stare at my project site lol Seems like I do more thinking than doing lately.
I hadn't thought about curving anything instead of keeping the lines straight. Curves would distract the slope a little I think so may look nice. Yesterday I did more assesment and it seems to drop about 18 inches from one end to the other. That would be about a 45 ft length. It would be way too much soil to level the whole thing.