I don't see why you wouldn't just get a Corsair HX520 for a powersupply. Quieter, enough power, and easier cable management... What else are you looking for..?
As far as motherboard goes, I would get the Gigabyte DS3L
For a case, I would try Newegg.com - LIAN LI Lancool PC-K7B Aluminum/ SECC ATX Mid Tower Computer Case - Retail
I'd much rather have that case for the same price. Another case you can look into is the P182(if you can find it on sale) or the Antec Solo. Also, you can look into the Kublai offerings by Silverstone.
I would personally get a Spinpoint instead of any other type of harddrive, but that's just a personal thing. They are known to be quieter.