Hello Fumbimo,
I took a look at your rig, It looks really good except from the power supply. I made a list of the components i'd choose and a explanation why.
Intel i5 3570K, Completely agree with you on this one. If you want to overclock you might want to take a look at the 2500k since this overclocks better.
Asus P8Z77-V LX, Asus is always good and you chose it too.
XFX Double Dissipation HD 7950 Black Edition, Its a little bit cheaper than the Twin Frozer and its almost the same. Also it has a higher factory overclock (900mHz instead of 880 mHz). Another thing I personally like about XFX is their Lifetime warranty.
Seagate Barracude 2Tb 7200 rpm, You chose the same.
Thermaltake MS-I Commander - Snow Edition, A case is personal and this is a good case for the money!
Corsair Vengeance 8Gb 2x4 1600mHZ, I chose this above the HyperX because this has a voltage of 1,5 and the hyperx has a voltage of 1,65. On all other spec's they are basicly the same (Speed and Latency).
Cooler Master GX750w, I chose this instead of your power supply because the one you chose does not have the reputation the be a good power supply. Cooler Master is a good company for power supply's.
Samsung 830 Series 128Gb SSD, The SSD you chose has the reputation to fail. Literally the SSD just dies. That's why i'd choose for the samsung 830 series 128Gb since this is one of the faster SSD's on the market at the moment.
Extra: Cooler Master Hyper 212 Evo, You didn't have a aftermarket cooler for your build. This is not really a problem but if you want to have better temperatures on your computer so its more stable i'd go for one. The hyper 212 is a cheap and good cooler.
This is my list of component you might want to consider some :)
Greetings,
Daniel