Please tell me if I should buy this spec or what should i change?

[Sushi]

processor i7-3820
motherboard MSI X79A-GD65
Memory Kingston 2x 8GB ddr3
2400 mhz
Graphics card MSI GTX670
SSD Kingston hyperx ssd 240gb 3k
hard disck wd 1tb blue
Optics lg dvd-rw
case cm storm stryker
power supply cooler master silent pro gold 1000w

OK. This is the suggested configuration
I want a high-end PC that will run current and future games very well
Mainly I plan to play Black Ops 2 on max settings and I will play it a lot
Will this PC be able to run 24/7 without getting overheated?
And will this PC still be good in like 3 years?

PLEASE TELL ME WHAT WOULD YOU CHANGE
IF YOU THINK SOME COMPONENT SHOULD BE CHANGED TYPE THAT

[_I_]

for gaming get an i5 socket 1155 cpu and board
2x4g is more than enough ram for any current game
1600-1800 ram is the best price/preformance above that is too expensive imo

drives/case/gpu/psu choices seem fine