Good build and good choice of components. But here are three things I would change about it:
- Look at 840 EVO SSD from Samsung. They may be cheaper and faster than Seagate 600.
- For the PSU, I woudn't go with a Rosewill PSU, unless your budget is too tight. Choose one from a widely trusted brand in power supplies such as Seasonic and XFX. Anything from these two brands will perform way better.
- As lucasz already said, you'll need a Z87 board in order to do overclocking.
Have fun building !