Excellent work Mike! Looks really good! I would definately insulate it before drywalling. I put in a 100 amp breaker in the 200 amp breaker panel in the house and ran cable to a 100 amp sub panel in my garage. Im feeding a 30 amp welder, lights, outlets and a large air compressor with no problems. I also mounted outlets in the ceiling for garage door openers and shop lights. Is it attached to your house? If so I would definately invest in door openers. Its really nice when its cold and raining to be able to drive right in and shut the door without getting wet!