Please rate computer build

Approximate Purchase Date: Christmas

Budget Range: $500-700 After Rebates and Taxes

System Usage from Most to Least Important: gaming, surfing the web

Parts Not Required: Keyboard, Mouse (I need a monitor and OS)

Preferred Website(s) for Parts: Newegg, Amazon, Microcenter

Country: USA

Parts Preferences: Intel

Overclocking: Maybe

SLI or Crossfire: Not right now, maybe in the future

CPU: Intel i5-2500K

MoBo: ASRock Z77 Extreme4

GPU: Sapphire AMD Radeon 6850 1GB

Case: Rosewill REDBONE black SECC steel case ATX mid tower

Ram: G.Skill ripjaw x series 8gb (x2 4gb)

SSD: OCZ Vertex 3 90GB

PSU: Coarsair builder series cx500 500w

Optical Drive: Lite-ON 24X DVD Burner

Total cost: ? (Someone plz estimate)

Additional Comment: I would like to play Diablo 3 on this. Will this max out the settings and please recommend an OS. I dont know if all of these parts are compatible so can someone please tell me and make any changes if they arent. I will PM you if I have any questions. Thank you.