There are a lot of 6700k overclocking guides that you can use to get the jist of it, there are some "OK" (very very simple) guides to 6700k oc on youtube, If you can find one on an Asus motherboard most of the settings should be nearly identical, as far as your cooler, if your temps go above 80 deg c its getting to the point of 2 hot, I would try to keep your vcore BELOW 1.35, but to change your voltage on asus boards you must set it to manual, offset or adaptive, I prefer offset, try to set your load line calibration around lvl 2-4, and keep your memory XMP profile off, load 2133 ram setting and manually set ram voltage to 1.35 volts for testing the cpu stability, once you have the cpu stable at the clocks you are happy with enable XMP in memory and try the tests again