recently had to move back to mom's house and need to know if any of the small grow cabinets work well. need to grow this in my room and was thinking of using the p.c growbox but im concerned about the smell and the size of the unit. i do not want to build anything and want something where i just need to add seeds and water. what is the smallest and best unit on the market ( with all the toys,,) that will grow a decent crop? or should i not waste my time..