After making what I think was a fair effort with the two-socks-on-two-circulars method, I decided to take Quilternity's advice (thanks Terri!) and put each sock on its own circular and switch back and forth between the socks. I can knit faster on one circular, and I really want to get on with the business of knitting socks. I'll have to count rows, but heck, it really only takes a few seconds.
I like this yarn too. It's Happy Feet from Plymouth Yarn. The color changes about every inch or so, so you get this tweedy effect instead of stripes. Even though it's mostly wool, it's a little stretchy, which I like too.