I have looked all over and haven't really found anything that answers my question. I have a Be Quiet! Pro 900 Rev 2 and will be inverting it do to my desk configuration. I will have a 360mm cpu cooler at the front as an intake. The GPU will be an open frame so it will be exhausting air inside the case. I plan on putting another 140 mm fan at the bottom as intake. This is where my question lies, should I have the rear 140mm fan as an intake since it sits lower and will push air towards the gpu. I would put 3 140mm fans at the top as exhaust. I know this will kind of create a chimney affect, but I also haven't seen much on that. Any sort of help would be greatly appreciated. I have build experience but this is my first inverted.