It would also be prudent to drill some air inlet holes in the case as far from the fan as possible to facilitate airflow. Otherwise you Have the fan sucking on

It would also be prudent to drill some air inlet holes in the case as far from the fan as possible to facilitate airflow. Otherwise you Have the fan sucking on a mostly closed box, which strains the fan and makes it hard to move much air through. The existing holes for ports seem inadequate for this as they look largely blocked.