Nice grow you have there !!
Few tips. I'm not really into Autoflows anymore, but I made my first grow with AF, and I really liked it. I'm mostly here to help, but, you should try to Scrog Train your plants. You don't really need super cropping, or nets, but you have a lot of space, and you should start to bend your main stem and train your plant to receive more light into the canope. It is allowing secondary stems to get all the light they need, and all buds will be at the same height. Few wires will make the job perfectly. If you bend all secondary stems, you can make a perfect circle of fat and tall buds. Don't be afraid to train your main stem all along the stretch of your plant (but only in veg/pre-flow). Gently break your secondary stems, they'll take two to three days to recover, but believe me, stressing a plant before, is far better than after. They'll be real strong, and the nugs will follow. You'll just have to Lollipop after the final stretch of pre-flow, and the all thing will be on cruise control.
I don't really think I have to teach you anything, but you should try. You can increase your yield & quality.
LOW STRESS TRAINING my friend.
Peace bro, I follow this up