yea this is possible, i don`t see why you coulden`t do 5 or so or maybe more plants, just got to be a little creative, and do a good bit of LSTing to your crop. What kind of light do u plan on useing? that small of a space i would try to go with some kind of CFL light or maybe LED if you can. What kind of supplies do you have for your grow? or do u plan on buying some? if so let me know and i can give you some pointers