I would tweak MichaelAwkward's build slightly. Once you consider if these are applicable to your situation.
If you plan/use Wi-Fi I would consider spending extra for a mini-itx motherboard with it built in. This bumps budget to get a H87, Z87, H97, Z97 motherboard and you still need to check it includes Wi-Fi, e.g. Asus H87I-Plus doesn't.
If you stick with suggested Asus H81i-plus motherboard be aware it doesn't support above 1600MHz RAM speed, so you could save some money if PC12800 (1600MHz), PC17100 (2133MHz), etc is cheaper than PC19200 (2400MHz).
I'm using Crucial Ballastix Tactical low profile RAM (BLT4G3D1608ET3LX0CEU) that can run at 1.35V, but Asus H81i-plus only offers 1.5V in BIOS. It was cheaper to buy two separate identical DIMMs using a voucher code twice than buy a dual-channel kit.
I personally would look at a single SSD instead of a mechanical drive, but it depends on your space requirements if you're the type of user that installs everything and never uninstalls completed games. I was going to suggest Intel 335 series 240GB, but the price has jumped from £79.99 to £99.98
Not sure on Nvidia GSync and 750Ti, but think only EVGA cards include display port (if that is a requirement) if you think that might be something you want to buy into later on.
Edit: The case power LED is blue. In case you are hoping to duplicate the green lighting theme.