Your build is pretty solid as it is. Just a couple tweaks.

Z97 version of the motherboard. It's cheaper, and Z97>Z87. Dual channel memory, which is slightly cheaper. Better, and bigger SSD. Generally 240-256GB SSDs are much faster than the 120-128GB range. It's worth the extra money. More suitable HDD.

Also, if you want, check out Flubt. I recommend them to every UK build. They save you around 8-15% off Amazon prices, for anything.

Hope this helps.

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