Hi, also consider a Asus x79 DLX+4820K very good mobo and the 4820K[see sig] is a better OC than a 4930K, you can always upgrade later.
Asus x79 DLX+4920k+Teamgroup 2400mhz =£652
My New Asus x79 Deluxe Mobo With A i7 4820k Combo Review
http://forums.overclockers.co.uk/showthread.php?t=18571314
The Asus x79 fully supports a 4820K/4903K > pci-e 3.0 / 1866 ram and better memory bandwidth.