im teearing down my 20x30. im building a 20x30 addition to my 2 car garage (20 x 26) which will have a 18x20 office, and a 22 x20 bay with an 8 x 12 door. im also adding a 20 x 60 shop with a 14x 14 foot door (16 foot ceiling). does anyone have any suggestions/ideas while im doing it? besides i need 220, and air lines.... any concrete tips? im also adding an ice maker, toilet, urinal and shower. best of all. it is going to be AIR CONDITIONED. the entire thing!