just wanted to know (yeah im new to EVGA)

i'm building a SR-X box and it seems i'm going to be waiting 1-2 month(s) before i get my 2nd CPU for the system (love the fact australia never keeps stock)
and wanted to know are there any problems with the system using with 1 CPU in the system with the specs below (i know about only being able to use 8 memory slots for 1 cpu) but what else am i over looking?
 
also what PSU will support both graphics cards and all the optional power connections on SR-X?
thanks for your help
david

SYSTEM BUILD (WIP)
EVGA SR-X Motherboard
2x Intel XEON E5-2687W
12x Kingston 8GB 1600Mhz DDR3 (KVR16R11D4/BHC )
2x Kingston 480G SSD Now
Corsair 1200W PSU Creative Sound Blaster Recon3D Fatallty
4 x 2TB Seagate Constellation HDD

Xigmatek Elysium Black & Silver Case

My mods rigs may give you some ideas on how to connect all optional power to your SR-X.
 
Good luck with the build! :)