Do you think this will be cool enough? I am a bit limited on space and don't know how much heat to expect.

Attachment 239942
2x 36 Volts 16 Ampere Power Supplies (the top one gets a hole for its fan)

4x Stepper Drivers for Nema 23 Motors (3-4A each)

3x 12cm fans. 2 blowing in, 1 blowing out. Wrong way on the picture :/ (74 CFM / 125,7 m³/h )