Have spec'd up the below but just want advice before I invest :)

CPU: i5-4670 Haswell, 3.40GHz(Turbo 3.8GHz - $312.92
MB: Gigabyte (GA-H87M-D3H) Intel H87 Micro-ATX Motherboard, Haswell, Socket LGA1150 - $155.83
Memory: Kingston (KHX1600C10D3B1/8G) 1x 8GB Hyper X 1600MHz DDR3 Non-ECC CL10 DIMM - $111.25

Should I tweak anything? Make changes?

The i5-4670k isn't much more but I don't plan to overclock and not sure the motherboard overclocks at all, should I get the k version?

Perhaps I should get another motherboard, was told to look at a z87, so maybe this: Gigabyte (GA-Z87-HD3) Intel Z87 ATX Motherboard, Haswell, Socket LGA1150, DDR3-2933(O.C.), USB3.0, SATA-3, PCI-E 3.0, RAID, Gigabit LAN, Audio, VGA/DVI/HDMI - $217.98 ?

Also should I get 1866mhz RAM instead of 1600? Read I'd have to over clock my CPU though? Also will getting two 4GB be better than 1 8GB?

My other gear I have is SSD with Win8, graphics is 560GTX and a Cooler Master elite 331 which supports ATX and micro ATX.

Thanks guys :)