I don't agree with motherboard/CPU choice. You could have gotten something much stronger from Intel's offerings for the same amount of $$.
Why upgrade from a GTX 460 to a GTX 560? The difference will be so minuscule you'll swear they're the same graphics card. (To a degree, they actually are.)
Here's a comparison of a 460 768MB VRAM vs a 560 Ti (a better 560, the plain 560 will be a chunk weaker.)