Your grow looks great. I should really watch what I say LOL
I am not going to say this is how every thing is. Just what I have seen over the years.
I started growing in coco and using GH nutrients
My first grow here. I don’t count my very first as it turned out to be all males. 
From almost every thing I have seen. Not counting outdoor grows. But a lot of them too.
Photos seem to do good in soil. But for autos. Coco is what I always recommend. For a few reasons. For what ever reason, in soil. Autos only seem to veg for 3 or 4 weeks. In coco. They veg for 6 - 7 weeks on average. Longer veg equals bigger plants. You also see almost no bugs ever if growing indoors 
The down side to coco is you have to water to run off every day. Well, not as often when they are just starting out. But around week 3 you will be watering every day.
I try hard not to add to much to soil grows. As autos respond much different than in coco. Again because of the longer veg time I believe. You will see a lot telling you not to top. it is high stress. I top every thing. Auto or photo. I have an AK-47 auto dropped. A few days old now. I may use it to show that if you watch your plant. You can get away with a lt. @Cap_Ron and I were going to do an auto run together to show what is said not to do. Can easily be done. I have topped autos 5 times in a grow. I don’t recommend it to others. But it can be done. I have transplanted, super cropped, lst and what ever else I could think of.
I should probably add this so I don’t get flamed hahaha
I had the luxury of testing all this because this is just a hobby to me. I don’t smoke per say. I do test some thing every now and then. Not often. So if I had some thing go wrong learning. It was not my med I was messing with. Just explaining why I have had the happy go lucky attitude learning. 
With that, I was trying every thing I read not to do to see for my self what was true.
My best advise would be to listen to what every one tells you in here. There are some awesome growers. Then choose one that grows similar to you. And also how you want to be growing. And have them more or less mentor you. When I got here. I had 2 that turned me around in my first grow. They helped with issues from my all male grow. And had me so in my first real grow. 4 autos. I ended up with over 23 oz. If one of them told me to do some thing that didn’t sound right to me. I did it any ways. Then asked them to explain why I was doing it. The grow was the link above.
If you want to catch some one quicker. just tag them. Add the @ sign and you can choose from the list or start typing their user name till you see theirs. Then just click on it.
Sorry for the super long post