I have an original NZXT Phantom case and right now I have an air CPU cooler. I would like to upgrade to a 240 mm AIO and I am wondering how I should do it. I have two 200 mm fans in the top for exhaust and I am wondering if my system temps will get too hot if I mount the radiator there and take away the fans? If I were to do that I would also add a side fan blowing air onto components. Would that side fan make up for the difference of not having the two top fans? Any help would be greatly appreciated.