MoBo - I wouldn't buy a MoBo that didn't offer a industry standard 3 year warranty.
SSD - Vertex 2 is last generation (285 MBps) .... New Corsair Force 3'd are 500 MBps as are the Vertex 3's .... when the Corsair's hit the shelves, their 4220 price will drive down the Vertex 3 too.
Twin 560's (900 MHz versions) @ $440 (862 fps in Guru3D game test suite) are 40% faster and $60 cheaper than one 580 (616 fps). Test suite consists of GCOD-MW, Bad Company 2, Dirt 2, Far Cry 2, Metro 2033, Dawn of Discovery, Crysis Warhead. Twin 580's are 10% faster than twin 560's. The HX850 isn't certified for twin 580s'http://www.slizone.com/object/slizone_build_psu.html
But it will do for twin 560'shttp://www.newegg.com/Product/Product.aspx?Item=N82E16814130651
Think about the newer Corsair AX850 or the XFX Black Edition 850
Cooler - The Scythe Mugen 2 (SCMG 2100) will perform better and at a lower price.http://www.newegg.com/Product/Product.aspx?Item=N82E16835185142