Hi, I am building my first gaming PC and I am sticking to a relatively mid-range budget. I will probably be running an Intel i5-6500 and an XFX Radeon RX 480 8GB card. I am now looking into cases, but there are so many different options that I feel more or less lost. Aesthetics are not a concern of mine; I simply want structural integrity and good cooling. I was thinking that I would want two fans; one front and one rear. Is this necessary? Also, how difficult is it to install aftermarket fans on a PC that comes with just one fan? Finally, does anybody have any good suggestions for cases? I was hoping to drop less that $100 on it, but I would spend more if necessary. I am very new to the world of PC gaming, so any input would be greatly appreciated.