Theirs nothing specifically wrong with the spec you've put together, but I'll make a few suggestions.
First off, if it was me I'd either buy a E2160 and overclock it to 3GHz, which it will comfortably whilst saving me a few pounds and getting practically the same performance or fork out for the Q6600.
Secondly, although theirs nothing wrong with the PSU you chose, I like to think the PSU is the backbone to a system and therefore I'd suggest get a few pounds more and getting the Corsair 520W.
I'd also again, if it was me get a 22" at least considering their only a few pounds dearer.