Hi Miguel. When it comes to fan selection it can be a tad confusing, but there are a few tips to remember to help you out.
Generally speaking, if you're planning on pulling or pushing the air through a medium, like a filter, heat sink, or radiator, you want a Static Pressure rated fan. Static pressure can be thought of as the pressure the fan needs to overcome to move the air past a barrier, like a filter. These fans are designed to overcome this resistance and keep their cfm closer to their design level, though it is generally much lower than Airflow designed fans.
Airflow fans are generally better for areas where you're wanting to move a lot of air, like out through the rear exhaust of the case, where they don't have to overcome much resistance. They do move more cfm than static pressure fans, but their performance drops off much more as static pressure is introduced when compared to their Static Pressure counterparts.
Just looking at the case, it looks like it will include fans already on the front (though they are severly choked off) and the rear, which make me think CM has the fans matched already.
For a connector, looking at the fan spec sheet it's a 4-pin PWM connector which I believe means their speed can be controlled.
Hopefully that helps a bit.