Upgrade time :P

So The Gathering 2012 (second largest LAN party in the world) is closing in and I really want to upgrade my current setup so I can impress all the people that walks by my rig (just kidding ;)

My current setup is:

CPU: AMD Phenom II X6 1090T Black Edition
GPU: XFX Radeon HD 5870
RAM: Corsair Dominator GT DDR3 1600MHz 4GB CL7-7-7-20
HDD: (x2) WD Caviar Black 1T S-ATA6
SSD: Corsair GT 120Gb
Motherboard: ASUS Crosshair IV Formula
PSU: Corsair HX1000W
Case: Silverstone RV02

What I plan to upgrade:

My 5870 to an ASUS 6970 DCII (maybe two of them).

My RV02 case to the new NZXT Switch 810 Black case.

Maybe the ram, if I choose to upgrade it, will it most probably be the 16Gb Vengeance ram from corsair.

An H80 cpu cooler from corsair.

What do you think? Is this a decent upgrade or should I just keep the system I got now and wait even longer for the parts to get even cheaper?

Thanks :)