I'm making some progress--it's just too slow for anyone else to notice.
I've been planing the lumber down by hand. Tommy, thanks for the suggestion, but I'll probably be doing at least a couple more projects this way, so it's worth learning. I don't mind the work. Hope it gets faster as I learn.
I got the boards rough cut. I cleaned up one surface on each piece, just knocking down the crown. Started to really flatten one of the long boards, and man, things really went off the rails.
The first thing killing me was the tear out. The first piece I really tried to flatten...I couldn't get away with anything. Planing any direction other than across the grain was tearing out like crazy. I ordered a toothed iron, and that's been great. You can plane any direction you want with no tear out, which is really nice when working on twist. I flattened with that, and then switched to a regular iron to clean up the corduroy...light cuts....
Second thing, I've never tried to flatten a board that was that much longer than my plane before. It took a while to get my head around it, especially getting the twist out. I was flailing until I figured out that I should work on just the twist. Pick one end as a reference, and march down the board with the other winding stick, knocking off the high parts. Never mind about bow or cup, and don't touch anything already level with the reference. Once you have the twist out, then get the bow, then the cup again, and repeat. It took me a couple of rounds of that. Don't know if anyone else here does this by hand--there's probably better ways of doing it.
Some of the maple already looks great. Alright back to work.