Well you could get a smaller case with that mobo http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Are you using this for gaming? If so how well do you want it to game?
You will also probably want a hard drive as 120gb is not that much storage. Also if this is not a gaming computer you don't need 8gb ram or a 500w PSU.
Hello all my budget is $530 and I will be getting a GTX 670/680 around Christmas, so no need for a graphics card now. I torrent quite a bit and already have a few TB's of HDD's so all I need is a nice ssd to boot off of and store games on