I've really been interested in growing out some autos. My setup isn't very big either 3.5x3.5x6 though so it's much bigger than yours. I live in a legal rec state so I stay within my limits. I keep a separate veg room in a closet in my house and my flowering tent is in my garage. I've been doing great off t5 for veg and a 400watt hps for flower. If I did autos I could maintain just the flower tent and add additional t5 or CFL lighting. Auto seeds are just expensive and you have to order them for every grow. I currently clone my plants for free.