yea my DIY spirit also gets stomped on by my laziness everyday
regardless of 3 80mm fans or 2 120mm fans bottomline is koolance stuff isn't the best out there meaning compromises have been made and we'll have to pay for it by louder radiator fans.
to make a silent water cooling possible, you need eheim 1046 pump + best of the best water blocks + biggest radiator you can afford/keep/fit in your case. i like the koolance solution, and it's a viable kit, but only thing that keeps me away is that with that much money, i could've built a much better one with bigger car radiator so i don't have to have loud fans by the radiator.