Nice spec from Idleman, if you could squeeze a little more i would go for the Gigabyte G1 Sniper mobo as their RMA policy is really good and UK based i believe. That CPU cooler is top notch too, also consider the Alpenfohn K2 Mount Doom, similar price and also insane performance, and if you want to lob a few extra quid on the cooler then you could look at the Phantek one, cant remember the name but it comes in a few diff colours and is also pretty much the best cooler you can get on air.
If you fancy a closed loop, OCUK do the refurbed H100 models, they are about £45 and offer excellent cooling and low noise and the benefit of any ram will work, as a lot of the air coolers will restrict ram heights.
That ram is top notch also though and low profile so will work well with that cooler. Any ideas what GPU your looking at? If you got around £500 then an Nvidia 780Ti will cost you around £530, if you want to spend slightly less then the Non Ref 290x cards should be out by then and will definitely suit that rig.