Anything above 500w will do you fine, you don't need 600w+ unless you are doing SLi or Crossfire.
Don't get that PSU you have listed it's Amp's are weak, to weak for the 560 (Non Ti version).
Get this one instead, you won't be disappointed.
http://www.komplett.se/k/ki.aspx?sku=657685#extra
Anyway, Mobo seems good, CPU seems good. everything seems fine to me.
You will be able to run Skyrim Maxed out with no problems, just don't set Anti Aliasing to 8x that will always kill performance, use the game's FXAA option instead that works very nicely on AA'ing things.
I personally have this setup and I'm always getting 60 FPS or somewhere near that, you can use it for comparsion if you like

BTW I'm running Skyrim @ 1600x900, Ultra setting except with Shadows on High because I love the FPS boost you get from doing that and plus I don't care much about shadows, oh and I'm using FXAA not Multisampling.
-GiGABYTE GA-EP45-UD3L (Rev 1.1)-
-Intel Core 2 Quad Q8200 @ 3.33GHz OC'd-
-6.00GB DDR2 952MHz 5-8-8-22 OC'd Flex Mode-
-ASUS GeForce GTX 460 768MB TOP OC'd (833/1055/1666)
-2x 320GB SATA&PATA HDD (640GB Total)- Both 7200RPM
-Rosewill Green Series RG530-S12 530w -