Question about Intel Core i5-8600K

I'm not an expert but I can say that I find this almost perfect, here are a few more productions that would fit better.

Instead of the 850 pro ssd, a 960 evo or pro, a little cheaper, but much much faster.
and put in a BitFenix Alchemy RGB, because it is also Asus Aura compatible.

Have fun with your PC,

LG

I would recommend the 512gb 960evo, because the 250gb are gone very quickly ;) and the ultimate speed of the m2 do not want to give away :) gtx1070 totally ok, but if you want to have longer rest equal to the 1080ti or 1080. mfg sven

500-600w is enough for a power supply unit

maybe take 7700k cpu, because 8600k are very new and the board are also expensive. right now you probably can't order one, so you have to wait or take something else.

would take 1080, maybe you can find one on ricardo or tutti

500gb ssd is probably too much but can't hurt.

the logitech keyboard and mouse are good but expensive, maybe you could get a zowie mouse and corsair keyboard
ram is 3000 clock easy, for the price you can also buy nice g.skill rgb ram

as AIO cooler you could also take the kraken, it looks much better in my opinion