A:Answer I added (2) 120s to the top of the case, you can get (2) 140s up there.
the 120s do great to pull the air out and cool.
if you are confrontable enough. I would suggest pull the metal plate off the front of the case (2 thumb screws) but you will need to re route an LED strip. That mod alone, you probably dont need 2 more fans up top. This mod can be done with no permanent alterations and can easily be put back.
the Biggest problem, with added 2 top fans, I cannot find the Exact fans they used. I found something that looks similar, however it is controlled by a remote VS all other case fans controlled by the MB and software.