Okay guys, I need your opinions. I have a customer who is converting some attic space into an storage area. She had the rafters covered over with floorboards, and wants me to install some lighting and an exhaust fan. Since the area is all DRY exposed wood, and will be filled with cardboard boxes. I feel this would be a good place to utilize an AFCI breaker. What are your opinions? Would you spend the extra money?