Why not get the i5-3570K? Why not get an HD 7850?
What is your total budget, and what country are you in?
for the gpu, i already have the r6950, kinda long story but it's a gift
for the cpu, the 3550 fits my budget especially when i was told that K cpus need mother boards that supports OC and they are more expensive
i live in algeria and the parts are kinda hard to get and are a bit expensive, i'm not opting for ultra graphic games so i'm okay with my build, i just want to have a safe PSU and a good looking case
my budget for the two ( psu and case) is "preferably " 100$, if it's not possible i can spend more but i wouldn't prefer that