i think you should go i5 personally look at getting asus maximus 3 mobo i5 oc got in sale this week and patirot sector 5 ram
http://www.overclockers.co.uk/showproduct.php?prodid=MY-026-PA&groupid=701&catid=8&subcat=1517
http://www.overclockers.co.uk/showproduct.php?prodid=CP-301-IN
http://www.overclockers.co.uk/showproduct.php?prodid=MB-368-AS&groupid=701&catid=5&subcat=1495
since the processor is oem i would get a h50 to get a decent over clock out fo it