So the CPU cooler you have chosen is a water cooled one and has a 360mm radiator with 3 120mm fans. This is quite large and only leaves you the the two options I mentioned. I will try to go into extreme detail.
Assume the front of the case is to the right.
The case comes with 3 120mm fans in the front as intake, blowing front to back. One at the rear as exhaust blowing also front to back (pulling air out at the rear).
Option 1)
Water cooler manufacturers typically recommend installing a water cooling radiator as an INTAKE for best temperatures. This means the fans will be at the front of case, blowing towards the rear. Fans typically blow towards their labels, or the supports holding the fan in place should be up against the direction they blow. Some have the plastic molding showing airflow and rotation direction.
This would mean moving the front fans to the top of the case, facing up (blowing air out the top)
Installing the radiator fans in the front, blowing towards the rear, with the radiator directly behind (to the left)
Rear fan would remain unchanged.
Top three fans ^ blowing up
------- __ __ __
Rear{---------|| {
------|---------|| { Radiator behind fans, Front fans blowing in, Front fan filter
------|---------|| {
-------PSU
Option 2)
Radiator would be placed in the top of the case, with the fans on top. This will draw case air through the radiator and exhaust out the top. My recommendation for better CPU temperatures is to flip the rear fan to face inwards. This will put a fresh stream of air directly under the CPU radiator to be drawn up and out. Front fans would remain as intake, this air stream should help with GPU temperatures.
Front fans would stay in place
CPU cooler fans would be placed in the top of the case with the radiator directly underneath.
Rear fan can be left alone, but I like to flip it around so it blows in from the rear instead of out. Best to add a filter, purchased separately.
Top three fans ^ blowing up
--------__ __ __
------- =====---Radiator
Rear}--------- {
------|--------- { Front fans blowing in, Front fan filter
------|--------- {
-------PSU
Hope this helps. Next step would be actual drawings or pictures.