All I've done with my auto's outdoors is let them get on with it. July is flower time, and August/September its finished, as for best for end result on seeds, I'd leave it outdoors all the time, only thing I do is make sure the plant is in full sun all day, and a bit of shelter from a brisk breeze at night, or if the wind happens to get up. I know you don't want to wait until September, but its a small price to pay for decent seeds, and we all know what happens when we try growing with rubbish seeds.