I like both suggestions thanks a lot.
I'm wondering actually do I need to be worrying about space with the case?
The case has poor airflow (only 1 fan at the back, and it PSU exhaust. It also has ventilation holes which seem to be outputting some air)
Do I also need to be worrying about the CPU cooler not getting enough ventilation? The vent holes are right above where the cpu socket should be.