I recently bought the Mastercase Pro 5 and some Noctua case fans to go with it. The case came with two front fans and one rear fan, so I bought 3 noctua case fans, two for the top, and one more for the front. I recently bought a blu-ray burner that I wanted to install, but now I have to remove one of the front case fans. I understand positive and negative air pressure, but how bad will it really be if I keep the 1 rear and two top fans, with only 2 front fans. All fans are 140mm also. I was going to check if I could install 3 120mm fans, and still have space for the blu-ray drive, but I don't think that will work... I am now debating whether I want to install the blu-ray drive now, or maybe return it. I appreciate the help!!