I look like having a belgium hare soon due to someone not looking after it I have read cage sizes etc would it be unrealistic to think in time with training if the housing was in my secure chicken run that it could run around the chicken run and have his houding door open and just locked on a night. I only have 6 hens and the chicken run is approx 30 ft x 12 ft the run is grass with a rotavated area for the hens to dust bath