My computer sits on my desk which has shelves above it. The clearance is only 19 inches, so I don't want it to sit right up against the bottom of the shelf. I need a case that will supply me with good airflow and is under 17 (or around) inches tall. I also need 2 2.5" drive bays and a video card length support of 12.5 inches. I also need it to be ATX compatible and be under or around $70. Thanks a lot!