Thanks @MarcParis and @KSliger got your suggestions! With that many fans I'll quickly run out of space for HDD's (good thing I added on the top mounting plate).
Thanks again!
@MarcParis Would these be Airflow fans or Static pressure fans?I strongly recommend to have dual 120 intake from bottom.
@KSliger Given the above, how about the ATX PSU? Should that also be in an exhaust configuration, or can it pull fresh air from outside the case?To add to MarcParis, be sure to get one more exhaust fan on top. Exhaust fans make a huge difference.
Thanks again!