Help with graphics card and system.

Hi there!

So i am building a system that has totaled up to $2100 and i am wondering if this graphics card is worth buying for such an expensive system, i can't really afford to spend more, but i can cut down items to save money, EG: lowering amount of memory would save $20.

The card i am thinking of buying: Gigabyte GeForce GTX 670 Overclocked 2GB http://www.pccasegear.com/index.php?main_page=product_i...

And my build: ASUS VE248H 24in Widescreen LED Monitor $195.00
CoolerMaster CM 690 II Advanced with Window USB3.0 $119.00
Samsung SH-222BB SATA DVDRW Drive OEM $19.00
G.Skill Ripjaws X F3-1600C9D-16GXM 16GB (2x8GB) DDR3 $95.00
Intel Core i7 3770K $335.00
Corsair Hydro Series H100 CPU Cooler $145.00
ASRock Z77 Extreme6 Motherboard $169.00
Corsair TX-750 V2 Power Supply $141.00
SanDisk Extreme Solid State Drive 120GB $99.00
Seagate Barracuda 2TB ST2000DM001 $100.00
Gigabyte GeForce GTX 670 Overclocked 2GB
Should i also think about getting a 850 PSU to future proof a little bit for future upgrades, and a final check to make sure everything will work together!

Thankyou kindly for help.