Thermal compound comes with the CPU. And with an $80 CPU cooler and 2 pre-installed case fans, you won't need a lot else. Perhaps you may want more case fans for your GPUs, here is the case's cooling options:
Cooling / ventilation
1 - Front hydraulic bearing 140mm Silent Series R2 fan, 1000 RPM speed (included)
1 - Front 120/140mm fan
1 - Rear hydraulic bearing 140mm Silent Series R2 fan, 1000 RPM speed (included)
2 - Top 120/140mm fans - positions also support some models of 240 radiators, depending on configuration
1 - Bottom 120/140mm fan
1 - Side 140mm fan
1 - Integrated fan controller for up to 3 fans (included)