oh and should i go with a intel i7 3770k
or intel i5 3570k for cpu
If this is a mostly gaming centered build, the 3570K is all you'll ever need (at least until the next time you want to upgrade).
If you want to do a TON of video editing or 3D modeling, then the 3770K would be good. The 3570K is still very capable at those two things, but the 3770K would just do them faster.
No real difference at all between them in gaming, though.