Remember that DDR3 is coming outquite a bit now, that motherboard's chipset is quite old, try looking for something a bit better. I do not have the time right now to build a PC for you, but here's what I would change:
Motherboard - Change
CPU - Fine
CPU Cooler - Research on this one and then decide
RAM - I like Corsair
HDD x 2 - I have read some amazing reviews of Samsung Drives, also had one of my own that worked very well!
Graphics Card - Already Ordered but nice choice
Case - I will be getting this for my next build - No doubt about it, love this case!!
And as for the rest, yeah it's quite decent. I know the experts will be here soon so wait for them, they will recommend some good stuff for you!