intake, for optimum temperatures. i suggest proper dust management, else your GPU will get clogged up with dust very quickly.
The Node 202 has a dust filter for the gpu intake I think.

i would do it that way too...
intake
10 char
Fans facing each spinning at different speeds is not effecient right?
I suggest removing the case fans.
just did some test running unigine for intake.
with fan: 60c
without fan: 67c
cpu temp and hdd temps did not have any noticeable difference.
Must understand more fans more dust.