Good points @kellydans and thanks for the tag.
@the-tick I would recommend Jack’s 321 first and foremost for nutrients because it’s cheap, it works flawlessly, it’s customizable once you learn to use it and understand nutrients, it is well supported in the cannabis community and its shelf life is unlimited.
Same with chemgro but not as many people use it, I use chemgro.
General hydroponics dry nutrients is another good option but its just more pricey and less customizable. But NASA uses it, lol.
As far as purning /trimming I don’t suggest it in veg. Unless your FIM’ing, which you should be doing to your autos to get 4 colas vs 1 cola and even your canopy out.
A little LST if you have the time patient’s (I don’t usually because I’m busy)
In soil you really want to avoid cutting a pla t as much as possible, in coco or hydro you have more buffer room because nutrients is so easily available vs soil. Autos react bad to stress and don’t have the time advantage to just increase the grow time to make up for stress fall backs.
I recommend tucking as much as possible and defoilation in flower once you know where your bud sites are. Ussualy I defoilate once after the stretch and again when I’m in the last 3 weeks of flower. Because bud sites need light to grow