Hi,
From what I understand In order to grow something worth while in the space you have you dont want a large container. You want a small container so the roots get rootbound and the plant doesn't get large. The size of the container shouldnt be more than 2 inches across the top and 3 inches deep. I have seen pictures of plants in one inch net pots that were stunted.
Although this would work with any plant, starting out with an early flowering indica would be best. Get your seedling up to about 8 inches tall and flower her. Your plant shouldnt get taller than 15 inches. Just be sure you get not only water but oxygen to the roots.
What I would do is get a one or 3 inch net pot and line it with screen. Set it in a larger container and keep a small amount of water in the bottom of the larger container let the soil wick the feed up to her. I would hand water until the roots were long enough to hit the moist bottom. Unless you use rockwoll. Then water every 3 days or more as rockwoll retains moisture very well and you could over water very easily. You dont want rockwool in standing water, you will drown them.
Good luck.
.