Hi, I recently acquired a Supermicro 846 chassis and need it to be quiet as possible (I'll be sitting 6 feet away from it). I was looking into doing a full fan swap of the current FAN-0127L4 to the much quieter but much weaker FAN-0104L4. I've also seen some suggest the FAN-0074L4, but I notice that it runs at a higher RPM. Would the FAN-0104L4 suffice with cooling (I'm not interested in removing the fan wall and adding 120mm fans)? Also, what can I replace my rear fans with? Thanks!