First time computer build do i have the right parts

I am building a desktop computer from scratch and i want to make sure i have all the right parts, meaning its a good, solid build and the parts will all work together. I'm new to custom built PC's and i don't want to make a mistake.
PS: the build is for running games like BF3 on high settings.
Here are my parts:
Processor:
Intel Core i5-2500K Quad-Core Processor 3.3 GHz 6 MB Cache LGA 1155 - BX80623I52500K


Motherboard:
ASUS LGA 1155 - Z68 - PCIe 3.0 and UEFI BIOS Intel Z68 ATX DDR3 2200 LGA 1155 Motherboards P8Z68-V PRO/GEN3


Graphics Card:
EVGA SuperClocked 015-P3-1582-AR GeForce GTX 580


Memory:
Corsair Vengeance 8 GB ( 2 x 4 GB ) DDR3 1600 MHz (PC3 12800) 240-Pin DDR3 Memory Kit for
Intel Core i3, i5, i7 and AMD Platforms SDRAM CMZ8GX3M2A1600C9

Optical Drive:
Samsung 22X DVD/RW SATA Drive SH-S223C/BEBE (Black)


Disk drive:
OCZ Agility 3 AGT3-25SAT3-120G 2.5" 120GB SATA III MLC Internal So
Thanks for your help, it's appreciated greatly!