I am planning on using the Noctua IIPC NF-F12 2000rpm on a H100i v2 as primary front intake and the same fan on top as exhaust. Is this giving me sufficient airflow for this case. I have 1 spare fan space at the top, 2 80mm at the rear. My plan is to OC the i7-7700k. Should all 3 fans be run off...