Chassis and Radiator Fan Placement

[Gelyfist]

I have this case, Rakk Hawani, Rakk is a local company for peripherals here at our place. It looks like the Corsair 460X. the case. It has these 3 120mm fan "slots"? (idk if right term), 2 120mm at the top, and 1 at the back

It says in the manual of the case that the best airflow is that all the front and top should be intake and the only one at the back should take the heat out of the case. I also have a z370 gaming pro carbon mobo, with these really massive heatsinks that block out my ML240L liquid cooler if I place the radiator at top. My question is, how should I do my Fan mounting? Should I remove the heatsink from the z370? Should I mount the radiator at front?

btw I have 3 extra RGB chassis fans, also came from Rakk.

 

[CountMike]

Since it's liquid cooler I would go for classic setup. Radiator at the top of the case with fans positioned so they blow thru radiator and out of the case. Front as intakes and another exhaust one at the back.

 

[Gelyfist]

This is good for my GPU, 50 C. But for my CPU, I don't know... It's quite hot, reaching 70 C. I reach only 60-65 when the radiator is at front. But my GPU is reaching 70 - 80 degrees C. What should I pick