Indian Landrace (Guess Shilavati)

Growing from Bagseeds. Feels like Indica from the affects. I have planted a few in a small pot. Will transplant the best one to a 5 L pot. Question? How do you know the "best" one? By the end of September the daylight will be less than 12 hours. And my constrain is money. So I got decent soil and good Sunlight (for now) and your help to get a yield as early as possible. Even an ounce would do. Wishfull thinking but you know.