I7 6700k and gtx 1080
for 4k stable 60fps you need literally the BEST stuff currently available. On ultra settings to get a sable 60 fps you would need TWO 1080s
What you have listed atm will probably not even run 1080p on ultra or high at a stable 60 fps, forget 1440p or 4k
What you have listed is a 500$ computer gaming on 4k means about a 2000$-3000$ computer