Help with antec 300 optional fans

Yes, the fans that come with the case are both exhaust fans. They actually do a pretty good job of pulling air through the case. The last build that I used an Antec 300 on had a fairly highly overclocked E5200 and a GPU with passive cooling. I didn't need to add any additional fans. I just used the two included fans and it cooled everything just fine even with the fans set to low speed.