[pritch]

Mine is 32' X 32', and I went with two 10 X 10 doors. And a 3' man door in between. Definatley check into the heated-floor option. You can prolly do everything that is under the concrete for 5 or 6 hundred, and get the rest later. And lots of conduits for wiring. I put in four. One two inch for main power, and three 3/4'' for speakers, phone & data and TV cable.