just added an intake vent to the front... much better airflow now.
Oh! Going to give that top fan mod a try, two regular size fans will pump in much more air.
waiting on a magnetic air filter for the bottom of the case. when that comes I will give the reverse airflow a chance... unfortunately that isn't how they designed the case so I started with what I was given and am making adjustments from there.
Its the way the case is designed. air intake on top, exhaust on bottom. I agree though that the reverse would have been better. Waiting on magnetic air filter cover to cover the bottom and then will try out a bottom to top airflow instead to see how things go.
Yes, a 120mm fan fits above the psu... that is what I have done in my rig.