if you are getting the non K version of that CPU and do not plan to ever do an SLI setup then a Z270 mobois not worth it. at least go with a H270 mobo which still can run DDR4 2400mhz RAM
it is 30 bucks for the K it is the fastest 30 bucks on your CPU... from 3.6 to 4.2 ... Why would you not want to gain 600 Mhz IDK to me that and a checp heatsink is worth it...
He's not overclocking, that also means you need to spend more money on a cooler and Z series board which is a real kick up the arse in terms of cost, $100 more.