Need some New Builders advice

[MyMagic]

So I'am planning to build a new PC for almost a year now. And now I'am just days away from actually buying the parts and screwing it al together and hope it'll work xD
I've done alot of research and most components I'll choose are quite sure, but not all of them are. This what I'am thing about to buy and screw together:

CASE Cooler Master COSMOS S X
HDD Western Digital WD1500HLFS X
HDD Western Digital WD10EADS X
CPU AMD Phenom II X4 955 Black Edition X
MOBO GigaByte GA-MA790FXT-UD5P X
GPU ATI Sapphire HD4890 Vapor-X OC 1*
RAM GeiL 4 GB DDR3-1333 Kit ?
PSU Cooler Master UCP 1100W ?

1*; I'll need advice of what to do with ATI's new gears which are coming and a possible price drop of the existing ATI cards.

- The one's with a 'X' behind them are components which are most likely I'll buy and use.
- The one's with a '?' behind them are components which are unsure I'll buy and use.

The big question is; Will It Work? (and yes, I'am asking it to you guys)

The idea is to upgrade this system component by component each time. This is what kind of external and internal upgrades I will make within ±1-2 year (in no order and not 100% sure) :
- New Monitor
- New MOBO and GPU (USB 3.0, PCIe 3, DX11)
- Windows 7
- Blu-Ray burner
- New RAM (better clocked etc.)

I'am happy with every advice, idea, tip or just information (which has too do with this system xD)

Thanks for spending you time reading my crappy English

NOTE: I'am living in in The Netherlands (if you don't know it, it's in Europ between Germany (most of you will know germany :S) and great-Brittain. Due that fackt not every component avoidable (in for example) will be avoidable in The Netherlands. And since I'am not willing to buy it over sea. Not every component will be in arm reach for me :S

 

[codyjansen]

i would not go with the cosmos. im sorry i just dont like it.

 

[MyMagic]

Could you explain your self? :S

 

[codyjansen]

i just find it to be an ugly case.

 

[MyMagic]

You've got a point there but I won't see it that much. And I'am not going for the beaty of my system I'am going for the coolness and the quietness xD

 

[codyjansen]

well if you wont see it that much then any case will do

 

[MyMagic]

Well that's an advice xD But not every thing will do I think. I prefer room in my case and like i said earlier upgrade-ability is one of my most important points. And I think with a case like cosmos it will all be in hand reach.