As he says the bulk of the components are for his next upgrade so thats not really the issue. Obviously you could get those parts and keep your motherboard, cpu and RAM but selling those parts will probably take the edge off the intel cpu, and board anyway.
With the cheapest cpu option it will only be around £130 anyway.. since he's got all the time in the world now with no work to do (isn't it fun? ) a new build is something to do isn't it
I was going to upgrade mine when I had nothing to do at first but now I can't be bothered lol