Hey,
If you have the slightest urge to overclock then get the 3570k. The board is OK, but would suggest to look at a Z77 chipset board not a z68.
This is what I would recommend:
cpu - 3570k
motherboard - Asus P8Z77-V (or Asus P8Z77-V LX if the Asus P8Z77-V is too expensive)
psu - Seasonic is...