This case is not designed for good airflow; doesn't even front fan mounts.
You can try to get the best out of it though.
Bottom fans should pull fresh cool air into the case so the air goes up
Don't know what's on the other side of the case, but fresh air should come outside to hit the radiator inside. the bottom fans will push the hot air to the top.
Top fans should pull the air from inside the case to outside as an exhaust
Back fans should pull the air from inside the case to outside as an exhaust
You can try to get the best out of it though.
Bottom fans should pull fresh cool air into the case so the air goes up
Don't know what's on the other side of the case, but fresh air should come outside to hit the radiator inside. the bottom fans will push the hot air to the top.
Top fans should pull the air from inside the case to outside as an exhaust
Back fans should pull the air from inside the case to outside as an exhaust