@Card Nox: I would go with the MCR if you want low cfm fans. Thermochill may be a tad better, but it's also way too thick to put in the top (or almost anywhere in the tiny P182).

@LsdBoy: First on the Mosfets, I noticed that the P182 has a dead spot in the corner, even with the 2 fans there. The NB/SB should be fine with a fan in the upper HD area, but you will want some other form of cooling for the PWM area. The Thermalright may work ok since it has a larger height, I'm not sure because I never ended up actually using it on my mobo. As for the loop, what kind of GPU's are you running, because 2 will dump a decent amount of heat. A 25% O/C isn't that much, so it may work out ok, but the temps will not be as low as they could be (if that is even your primary goal).