If funds allow you could try a new case. I've noticed the Corsair 540 has a direct airflow path across the cards and plenty of places to mount the rad. The PSU also sits behind the motherboard so you don't get any heat from that inside the chamber with your components.
I'm just waiting for the new CPU's to come out before I switch everything to that case with a new MOBO and some DDR4.
I'm just waiting for the new CPU's to come out before I switch everything to that case with a new MOBO and some DDR4.