Sorry I'm looking in pounds and should have been converting to dollars, its £200-£270.
Depends on case budget my list would be.
HAF932 or HAF-X
Antec 902 or 1200
Silverstone Raven RV02B-EW or Fortress FT-02 (big money case)
4 gig ram is sufficiant for most apps and games but 8 gig wouldn't do you any harm.
Corsair Dominator, G-Skill Ripjaws, Crucial Ballistix, Corsair Vengence 2x4gig on offer.http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007611%20600006069&IsNodeId=1&name=8GB%20%282%20x%204GB%29
Coolers Thermalright Venomous X Black with a couple of Enermax Cluster or Scyte Slipstream fans.
Silver Arrow and Noctua DH14 are top coolers but massive and ugly IMO.
The Deluxe is the best power design and you do pay for the usb3 front box which is handy because it will fit in any case.