Hello, i am new to PCs and need to make sure this build is okay before i attempt to build it. It is someone else's build i found a YouTube, i just changed the PSU and graphics card. I'd like to keep the total under $700 including the OS. I just want to make sure it is as efficient as possible and no bottle necking. http://pcpartpicker.com/user/zrossk/saved/#savedbuild_1833347. Thoughts? Thanks.