Bottom fan in.
The front fans will be "used up" by cooling the hard drives.
For push/pull, match the fans, equal CFMs, and a large as will fit. One into the fins, one out of the fins. One on each side, ultimatley bowing towards the back of the case.
I only have 2 hard drives setup. so is that ok for the bottom fan and which fan to use as the bottom fan (2 fans 90 CFM for the front). is a 44.2 CFM any good for the bottom fan slot?
This is how I will be setting up:
front - 2 intakes (90 CFM each)
side panel (2 intakes 44.2 CFM each)
rear - 1 exhaust (110 CFM)
up - two fans (90 CFM each)
bottom - will a 44.2 CFM work or should I leave it empty.