look the best i would suggest wud sound wierd to u but is really effected its tried and tested
put the rad fans in exhaust and turn the rear fan to intake and use a good high cfm fan like the 140mm version of the same fan this wud provide u with fresh air to rad
other than this
sides exhaust for gpu hot air bottom and front intake
Okay but should I put the fans on top of the radiator or on bottom?