I have a 27' x 23' metal building that I am finally inclosing and putting up a 16x10 garage door. The metal "studs" are spaced 4 ft. I was thinking of installing � osb laying it horizontal then laying peg board for the next 4ft up. Do you think the 4 ft spacing of the metal "studs" is going to be a problem? Also if I decide to add insulation could someone give me advice on what type. I plan on doing a small area at a time. I live in the south so my main concern is keeping it from becoming an oven in the summer. Thanks for your advice.