Always helpful if you state a budget. Also useful is a link to the parts you have chosen is good also.
Case fine, (I have just bought the red).
PSU rubbish. This is a very important component and spending £40 on a 800W is not a wise move. you need the power supply to be stable, something the cheaper brands do not do. Also you really do not need to go as high as 800W 550/600W will be plenty.
Ram should be fine.
Graphics card wouldn't be my choice but seems to get good reviews.
Arctic cooler and paste fine.
Optical drive, I would not bother with light scribe its crap.
I would swap the 1 TB for 2 500 GB's that way you can keep a back up of your main drive. If the 1 TB goes wrong, chances are you will lose everything.