Pruning is not needed in veg, possibly flower.. If you're not going for medical grade I don't think thirty is unrealistic for you, assuming you have some plant knowledge. If you understand the risk and still want to go forward read the threads sunni pointed out to you. I'd say go for it. Depending upon your local climate anti fungal and insecticide will be your friend. If you get high humidity come harvest time trim some lower branches for airflow to help deter mold. It's a weed it grows on it's own, humans just manipulate it to grow to it's genetic potential. If anything it will be a learning experience.. Good luck