Can you fit an inlet fan on the inside right of that Sugo case near the front? If so and there is no support for a fan, using a 4.5" hole saw is an easy case fan adder. I like using the that hole saw. It makes a 114mm hole, I think, so I can use 120mm fans and put a Silverstone filter over the inlet to add clean cool air to a build.
That's a good idea.. Since all of the cables are up in front.. that right side portion has space for a 120mm fan. but that part doesn't have hole so definitely need to bore on that. I'll use the space also on top of the graphics card to put some unused cable.. to lessen the cables in front. :)
I'd love to see how this turns out for you. Please shoot me a message when you get it changed.