Temp testing needs to be done with prime 95 v26.6, and nothing newer or you'll get seriously funky high results that are totally unrealistic.
http://redirect.viglink.com/?format=go&jsonp=vglnk_148485739861912&key=984ed3ed6aa9a69986f88d56d10e7616&libId=iy4tp9q601000a17000MAb6azia6j&loc=http%3A%2F%2Fwww.tomshardware.com%2Fanswers%2Fid-2530575%2Fintel-cpu-temperatures.html&v=1&out=http%3A%2F%2Fwindows-downloads-center.blogspot.com%2F2011%2F04%2Fprime95-266.html&ref=https%3A%2F%2Fwww.google.com%2F&title=Intel%20CPU%20temperatures%20%5BSolved%5D%20-%20Intel%20-%20CPUs&txt=http%3A%2F%2Fwindows-downloads-center.blogspot.com%2F2011%2F04%2Fpr...
As for the kraken x61, my i7-3770K sits at max 76°C at 4.9GHz @1.32v, normally 70°C at 4.6GHz @1.208v, during p95 26.6 small fft after 1 hr test. Gaming doesn't see over 54-55°C no matter what.
So, you should be able to get approximately the same, that's a great overhead cooler. Clicking? Can happen with pwm fans but those stock nzxt v2's are great fans, normally, and it's possible, sometimes to get a slight buzz from the pump, but it's not something usual to the asetek pumps, mainly the coolit designs Corsair is fond of.
Are you running the CAM software? You should be with that aio, it's important for pump/fan speed controls, running through bios isn't recommended, or if you are, do you have pump/fan speeds set correctly? Anything other than CAM will need the pump set to 100% duty cycle at all times. With CAM I run my x61 on Silent profile, the extra few °C aren't worth the noise when the fans hit max speeds.
1 thing to check is the pump install. Make certain its fully seated and the lock ring is firmly engaged, with AIO's, the tighter the pump to the cpu, the better, so it needs to be fully seated. If that pump was new when installed, and you remembered to remove the plastic from the factory paste and didn't touch the paste with your fingers, there shouldn't be any issue with that part, it's pretty idiot-proof.
Airflow. You won't need any fans other than the x61 for exhaust and a couple of decent intake fans. Or vice versa, with top mounted exhaust. 4x fans is plenty for any system, more just sees diminishing returns. But you do need 4x, 2x in, 2x out (or a 200mm would be good). If you have one of those funky cases with compartment styles, air intake is more of a priority, better have some decent cfm intakes in that case, just to move the air to where it'll actually do some good.