There's arguments either way, but I prefer non auto because you have better control, and maybe save a little electricity on the 12/12. That's a big grow space, depending on lighting, I'm thinking around 6? As far as strain, that's not my speciality. I've been using the same seeds for 3 grows that were gave to me and I was told it is satori. There's a million cnotices. I prefer and indica based strain.