[*FINAL BUILD*] Advice please...

Ermmm... I should have explained this earlier, but this is my first build, and I don't understand much of what you said there :)

I also live in the UK so I can't buy from places like newegg and stuff.
Please provide links to a UK site if you can?
 
yeah, scan.co.uk, it's a UK website which will take about £30 off what your buying.

3x2gb of ram is the memory used and is made by corsair and runs at 1333mhz and costs £62 inc vat.

the akasa nero is a heatsink and fan set for £28 inc VAT which has a low noise footprint but low temperature.

and also the hiper 780w thing is a modular PSU, which means you can choose what power outputs you want it to have and it has a high enough amperage for you to use two 4890 graphics cards in your pc.