My PC was running slightly hot as a whole, with just the stock 120 mm fans that the Fractal Design Meshify C came with, so I bought two Noctua NFS12-A 120 mm fans. Right now, one of the stock fans sits at the top of the back side (exhaust), while the other sits at the front, in the middle pointing towards the GPU (intake). Where should I place these Noctua fans? I was thinking of just placing them in the front as intake, and taking out the stock, for a total of two intakes and one exhaust. I want to be able to minimize dust as well as maximize airflow.