I agree about the contrast and bench, and would like to add that the sky is too bright for my personal taste. Bclapper (Brian) has come up with a great trick for fixing this if you don't have a split neutral density filter before hand. Select the sky by drawing around it, feather to 10, then put a gradiant on it (foreground to background?--Brian, please correct me if you see mistakes). Just use regular black as the color, and dial down the opacity to 10 or 20 percent, according to taste.--Chris
Chris got it pretty much spot on. The only thing I'd add is that I use a black-to-transparent gradient (sometimes feathered, sometimes not). It's not always necessary to select around the sky, either, depending on how straight the horizon is. (Probably would need to in this case, though.) The technique is somewhat forgiving. The reverse (white-to-transparent) also works for lightening up a dark patch. I can't really say I came up with this technique; I've run across techniques similar to it elsewhere in my Googling. The most I can claim is some synthesis of the stuff I've read.
Oh, and I like the image and agree with the other comments made. -Brian