If you can give me an idea of the exact amount of space i would give you my advise on a breed of plant and the amount of light you will need.Alot of the companies are no going with the bigger autoflowers for more yeild.But alot of the original auto's can still be purchased. For a small plant with a good bang for you buck. I would suggest world of seed afghan ryder. smell is not to bad yet high is just what they say devastating. When we had some i lost my footing a time or two.Most of there auto are on the shorter side. expect 15-35 grams per plant in 56 day from seed. The dinafem roadrunner was another that was short and stocky with limited smell.It's smoke was a good avaerage smoke, just not killer.of course the orignal lowryders are always a good choice or the lowryder 2 they are short and produce around a ounce if cared for properly. Most any plant from the joint doctor would be another good choice.If you do have the room i again would sugest some of the new larger auto.Like royal queen ak auto or anything in the critical auto strain will yield larger numbers for you.Sweet seeds also have some great yielding auto's for a good price.