Hi, we are planning on buying a puppy (Rat Terrier) and want him to be an indoor dog however during the day would like to build a kennel and run for him while we are at work, etc. We have a temp regulated garage and my thought is to build a kennel in the garage with a pet door to an exterior run. At night we would allow him into the home to be with the family. Suggestions, will this work or be a nightmare?