i was just drawing a blueprint for a grow like this. its definitely possible. my problem would be with ventilation.
unless u install some type of ducting to move the air, its gonna be stale and hot in there. but then if u install ducting it wont be stealthy.
even if u use cfls the temps could reach up to 90*F. and the most ud harvest is 2oz or so in about 3 months.