Memory is good, but could become a problem if you get a large heatsink or want to upgrade to 16GB later. The heat-fins on Vengeance RAM are largely useless and can conflict with large CPU heatsinks, getting a low profile kit will avoid this problem.
G.Skill Ares 8GB (2x4GB) 1600Mhz CL9 1.5v. $40 http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Case is good.
PSU is good, though is overkill if Crossfire/SLI isn't an option later.
Firstly, unless you want it for high-end photography, or design work, there's no point to i7, i5 is plenty.
You would be better to use Ivybridge processor, rather than Sandybridge. Better performance, more up to date, minimal extra cost.
Then you need to decide, if you want to overclock processor. It can give a performance boost, more in some games than others, but the equipment cost is higher.
Then you need to decide, if you want to stick with a single monitor, or expand, in the near future, to multi-monitor.
Would be easier to help you make those decision, if we knew the CURRENCY of your budget. Bear in mind the above are "wish list" considerations, it may not be possible to fit to your budget. (obviously a bit easier if it's in UK pounds, than Japanese Yen)
im from canada i dont plan on overclocking since i think ill burn all my computer haha i dont plan on multi monitoring its mainly to play the latest game with good fps at high resolution i got 1200-1400 CA dollars
Overclocking is not the "risky business", it once was, but if you don't want to overclock, get a "factory overclocked" graphics card, an i5-3450 processor, a H77 motherboard, loose the aftermarket cooler, and save yourself some dollars.