General rule of thumb is 120mm fronts if you expect to go to 3 later, 2x140mm fronts for quietest/easiest install. You align one to the top (intake - pointing towards your Dark Rock 4) and one to the bottom (sitting on top of the PSU shroud, so it's aimed at your video card. Then you put the Meshify C fans on the exhaust (back) and exhaust (top/back) for a relatively balanced airflow. Again, get rid of that drive tray if you don't intend to use it 😅
Very kind and informative post, thank you! I'll admit I was going to wing all of that, and now I won't have to 😅
I did it because my kid is obsessed with looking inside. But it *is* pretty cool, and if nothing else you can confirm that all of the fans are working! But it's a slippery slope; you may one day end up looking at RGB strips!
I believe it's possible to make such things look beautiful ... But it takes restraint, and it's not something I'm remotely interested in doing myself. But as you say, watch this space 😀