CPU is certainly good enough.
Graphics card is (as already mentioned) overkill if not gaming, but certainly up to the job of anything your might want, considering the other kit. It'll handle video and gaming no end.
Decent HDD. I have a 1TB F1 myself (although not as boot, as I had a velociraptor already), and use it for installing games to and keeping backups. Nice and fast for a 7200rpm drive.
8GB Memory - fine! No idea about G-skill though. I tend to use Crucial or Corsair RAM personally, so can't comment.
Not that familiar with the other kit, other than Asus is reputable, as is Coolermaster.
All that of £633 (including VAT?). Remember delivery prices (plus VAT again) too. Not bad at all. It tromps all over my 2+ year old system (velociraptor perhaps wins the HDD category) and it cost more than a grand. I haven't done a search on your mobo, but have you swotted up on the mobo vs RAM vs CPU etc, so you'll be getting the most from all? No point in getting overly slow or fast RAM for a given system. Better to get the RAM just right and save cash or hassle.
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Scottish Labour politician: �The SNP are on a very dangerous tack. What they are doing is trying to build up a situation in Scotland where the services are manifestly better than south of the border in a number of areas.�
Interviewer: �Is that a bad thing?�
Scottish Labour politician: �No, but they are doing it deliberately.�