Idea for new System

I've been stressing for a while on wether to get a gaming laptop or desktop, I had decided to go for the clevo m98NU with some configuration.

But now after much thought I have decided I can get a more powerful and FULLY upgradable system for cheaper, although it will lack the portability I will still be happy.

SO now it's time for desktop here are the specs that I have come up with so far, I haven't chosen a GPU or a case due to the fact I am not sure which to go with.


Pioneer blu-ray reader and dvd dl writer, £58.89
Intel i7 920, £203.75
Asus P6T Deluxe V2, £202.60
6GB (3x2GB) Corsair Dominator DDR3, PC3-12800 (1600), 240 Pin, Non-ECC Unbuffered, CAS 8, £122
1100W Coolermaster UCP1100 PSU Rev.4, £150.16
1TB Western Digital WD1001FALS Caviar Black, SATA 3Gb/s, 7200rpm, 32MB Cache, £68.64

What do you guys think of this?

Also can you point me in the right direction for a decent graphics card, I will spend max of £350 on one.
Case, I want it to be sleek looking but not covered in loads of stupid LEDs ¬¬ I want it to be decent in cooling and low levels of sound budget for a case would be £150 if I see sense to spend more then I will.

Also I will be overclocking my i7 to 3.5ghz, would I need an after market cooler or can I stick with the standard intel one at that clock?

Thanks in advance guys