Protip: If you click the [BB] button to right of the permalink, that will generate a list that have proper hyperlinks and part prices/ect that you can paste into replies so it's easier for us to read them.
Why give him 750 watts when his system draws 350? A 550w PSU is more than enough!
I would not go sci fi and say it will last into 2017 for gaming...that is a long time in game. I built the spec you see in my signature in 2013 and am now on simply "high end gaming" spec.
The above system is the same as mine. Perhaps more CPU power and a 5fps advantage in some games (thx to my crazy OC)
So does that mean you think my system will still be good in 2017 when I can already no longer play many games on everything maxed out on my 2560x1080 screen?