New pc - need tips

I am going to build my own pc with parts, but I was wondering if they all fit and the pc will work. Did I forgot any pc parts? How much fps should I expect (Crossfire)? How many bots can I use in vmware? Is this a good setup? I really need your help!!!!

XFX RADEON HD 7870 DOUBLE DISSIPATION
Crucial Ballistix Sport VLP 16 GB DIMM DDR3-1600 Kit van 2 (2 DIMM) (RAM)
WD BLUE WD10EZEX 1 TB
CORSAIR BUILDER CX600 V2 (600W)
AMD FX-8320 BLACK EDITION
ASROCK 970 EXTREME4
COOLER MASTER SILENCIO 450 (Case)
Samsung DVD-Writer SH-224BB ( Do i need this because I am confused. Is this a dvd reader or what is this optional for pc because I am going to instal
Windows 7 with cd-rom)

Sorry for my bad English