Samsung spinpoint F1 instead of WD maybe?
You could also do with cheaper board.
And do you really need quad? It's really not gonna be used much just yet apart from few titles and not like the current duals wont deal with it just fine for the next year or two tbh.
looks good, I persome your not going to overclock? *no after market cooler* but its okay, AMD onces tends to be better than intel