Though the antec 900 is a great cooling case. I owned one its a real tight fit these days for the new longer cards at 10.5 in's. The fan cage on the hd bay will have to be removed and best not to put any drives in the lower bay.
I opted to get a bigger case when I upgraded my video card. I didn't want to chance a tight fit and reduced airflow. Also I had the drive bays filled where the card was and was not able to move them up.
Coolermaster HAF is an outstanding cooling case these days and its a few dollars more then the 900. This will give you more front to back room and allow for more airflow.