Need advice on $800 Gaming/modeling/programming system.

[drowneath]

Approximate Purchase Date: This/next week for the vga and psu, next month for the motherboard and processor

Budget Range: $700-800

System Usage from Most to Least Important: Programming, 3D modelling (Blender), gaming (DiRT 2, WoW, crysis, SC2), watching movies

Parts Not Required: keyboard, mouse, monitor, speaker, os

Preferred Website(s) for Parts: newegg.com

Country of Origin: usa

Parts Preferences: Intel CPU, Nvidia graphics card, Asrock/asus/gigabyte mobo, corsair/ocz/... psu

Overclocking: Maybe

SLI or Crossfire: No

Monitor Resolution: 1680x1050 (samsung 20")

Additional Comments:
So I'm planning to buy these:
- Intel Core i5-2500K ($225) http://www.newegg.com/Product/Product.aspx?Item=N82E16819115072
- GIGABYTE GA-P67A-UD3-B3 ($130) http://www.newegg.com/Product/Product.aspx?Item=N82E16813128476
- CORSAIR XMS 4GB 1600 ($50) http://www.newegg.com/Product/Product.aspx?Item=N82E16820145339
- EVGA GeForce GTX 560 Ti SC ($295) http://www.newegg.com/Product/Product.aspx?Item=N82E16814130628
- Corsair Builder Series CX500 ($70) http://www.newegg.com/Product/Product.aspx?Item=N82E16817139018

Total: ~$770

But I'll buy the GTX 560 & CX500 first (this month and will be used with my current system: Core 2 Duo E7500) and buy the rest next month.

I'll be using it for casual 3D modelling, gaming, and programming.

So what do you think about my build? Will the CX500 be able to handle all of them?
Also is it worth the money if I replace the processor with i7 2600K?
Please suggest me if you have a better option.

Thanks.

 

[drowneath]

anyone?

 

[Why_Me]

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