My New Computer Rig - Need Suggestions and Advice

Greetings all Technology Interested people of Zelda Universe!
I'm in progress of buying a new Computer, however, I'd like some small advice about buying in terms of it being good enough in price, being overpriced or not.

As for the specifications, these are:

Gigabyte GeForce GTX 580 1536MB

Fractal Design Define R3, Black

Corsair 4GB (2x2048MB) 1600MHz XMS3 x 2

Asus P7P55D-E PRO

Optiarc AD-7260S DVD±RW Svart SATA, OEM x 2

Corsair AX 850W 80+ GOLD

Intel Core i7 2600K 3,4GHz


As for harddrive and Operating System, I already have one I'm going to use until I've enough money to get a SSD.
The total price of this little pack is going to be 12 129 SEK which is:
1 378 €
1 876$

I'm mainly unsure if I should buy the GTX580 and wait until the prices has gone down.
Thoughts on this little pack?