I just build a new comp with the E6600, you shouldn't even consider anything else if you are looking for a great proc with good value. (The E6700 is too much of a price jump to be much worthwhile.)
I just bought this monitor a couple of months ago:
http://www.newegg.com/Product/Produc...82E16824009102
I absolutely love it. It's an Acer like the one you picked, the ratings are extremely high (read: not many people ever get a dead pixel), and it's bigger for a minimal price increase over what you chose. I made a side-by-side comparison of 20.1" and 22" widescreens before I bought it and I'm extremely happy I went with the larger size. I've just played through DOOM 3 on it and didn't have any issues.
If you don't plan on reusing your mobo, you may want to look for one that doesn't support Quad Core. You could probably save yourself $30-40 if you aren't planning on upgrading in the future.
Jam it back in, in the dark.