The fitting sides will be facing each other.
I'm flipping the MB tray and the doors will be swapped, so the HDD vents are at the top of the doors. I will be cutting them out and taking just enough material from the doors to allow the fans to protrude outside the case. Will be running Push only. The Radiator on top will be running Push/Pull with a bank of fans atop the new top when I get it. For now I will run a single bank of fans internally in Pull to keep the noise to a minimum and the cooling at a maximum.