hi all, and advies on build

Hello i guess since i didn t know where to put the thread this is the best place LOL


SO well I' m in need of advices ,confirmations on my choices ,
I will be using this computer mainly for HD go pro hero3 videos editing programmes like Imovie, avid movie composer, cineform studio...etc, playing games like need for speed the run,
I already have :LG 21,5 led monitor screen 1080p
LG blu-ray home cinema sound system 400watts
I will need to set the blu ray on the motherboard or the graphics card ?

motherboard
http://www.gigabyte.com/products/p [...] id=4147#sp 80 euros

processor I5 /2500k 200

ram: probably 2x 8g 1366 1600 mhz or 2000mhz???? i don't really know what would be the significant difference ? but probably some like that
http://www.amazon.fr/Corsair-CMZ16 [...] omputers_2 70

seagate barracuda 7200 2x 1 T 100

alimentation 600 watts 50

gfx card i m stuck on what i really need for hd videos and to play my game, i have a budget of 120 euros i , ve been propose a gtx 550 ti for 120 but wondering if that s the best
at least 256 bit, 1g ram ddr5 448 core right next would be clock memory like this is not to bad?
http://www.amazon.com/EVGA-GeForce [...] 413&sr=1-5
I also will have windows 64 bit ultimate ,bit defender 11, case, sound and wireless card,ventilations,for free as well as a step by step tutorial to set it all up ,pretty nice?

thanks you for your time and advice on the gfx card and anything else

i came to 600 euros not to bad