I have fan in low front and top pushing air in. Top one is directly over RAM. Then, CPU fan pushes air to back, where fan at back wall sucks it out. Free flow in from bottom, PSU sucks also air from there and pushes it out from back. Free flow out top rear. Vents at transparent side panel let GPU cooling fan air out. CPU temp stays during gaming between 65 and 72, GPU rarely goes over 70.
Well, I messed around with the fan software some more and built a custom fan RPM profile. I played AH for awhile with it and am happy to report a CPU max of 65 and GPU max of 59 while playing for about 40 minutes in a Brewster getting blown to shreds defending a crowded field and town. The noise was actually tolerable.
I like the idea you have for the side panel vents letting the GPU out and will replace the plexiglass with the vented sheet metal side that came with the rig. Looking at the parts inside is exciting for only about 11 seconds tops anyways. Perhaps I'll use the plexiglass as a table for my coffee and pistachio nuts while I play.
I purchased the Noctua for the CPU and I'll install that tomorrow in hopes of lowering at least the sound some more. I thought I'd dread having a PC again but it's getting fun like it was in 2003.
Ouch! my wallet just bit me.