Mostly is all inside, I have used MaelStrom240 on top with 2x120 fans and the small 4-pin PWM fan hub hidden on the top. Since it has 4x 4-pin PWM slots, I plugged 2x120 from cooler and 1x120 on rear. The front fan is direct on motherboard.
Despite the dimension of the PSU, it fits perfectly and the slim cables are very good in this kind of situation. In addition I appreciate the single 12V cable with 2x8-pin on it, that is good for a clean cable managment. The SATA cable is hidden under the motherboard's PCB