that cpu is locked so it cannot be overclocked and comes with a cooler so you would not need the aftermarket cooler.
The motherboard/hdd etc would come with sata cables, so you wouldn't need extra.
A mid atx tower is not much bigger than that?
CiT Vantage Midi Mesh Gaming Case with HD Audio, 4 Fans, Card Reader and No PSU - Black: Amazon.co.uk: Computers & Accessories
And the best advice i can give is NEVER USE A CHEAP PSU, NEVER. That one WILL break an take other parts with it. trust me.
Only use trusted brands. corsair,xfx, seasonic, ocz etc or a trusted rebrand (novatech)
Novatech PowerStation Gaming 400W Silent ATX2 Modular Power Supply | NOV-PSG400
I would save some more money an get the I5 3570k (£170),but depends on what its used for. I
wouldnt bother with ddr3 graphics cards, get a ddr5 (only 20-30 more would be needed)
ddr5 1gb hd 7750oc