I am going to order a starter kit soon but need some info before I do. Would you get manual or automatic just starting out? What type of cartridges are close to a Marlboro light? I smoke about a pack a day right now so what would you suggest for nicotine level? How fast should a person go through a cartridge if they smoke a pack a day? Also, about how long does a battery charge hold on a regular cig that comes in the starter kit?