The coolit system, from what Ive heard doesnt have the ability to effectively cool a high end cpu in an overclocked enviroment.
If you note, it uses a very small radiator and fan combination and is designed to run off your computers internal psu. SOmething a high power tec system would never be able to do.
A good tec cooler requires between 200 and 400 W of power. They are notoriously inefficient and straight water cooling with a high end kit would be much more beneficial in an enviroment such as yours.
May i reccomend this kit.