Coop Expansion Plans

The little red coop that has been the brooder and now temp home for the young ones won't work for a long haul.  I told Steve we were going to need to expand the coop.  He's like why?  The young ones need to be in the coop with the others and lay their eggs there.  He drew up these plans and is pondering it until it cools off here.  After the coop is enlarged and done we will remove the red coop.  I have been letting them mingle and after I change their feed to grower they will go together for good.  Side view and top view, hmm how did it get turned inside out?  Well, the gist is still there. :)