For pruning, you should wait till the plants have been in 12/12 for about 18-23 days - or a couple a days after they stop stretching and aren't growing upwards at all. Otherwise, the added stress could cause them to self pollinate.
At that time, you could take some leafs and branches. I wouldn't do much on the topside of Lexi, as she has adequate spacing between leaf fingers, and her canopy looks great. On the bottom of her, and the all the others except the Auto - I would strip any leafs and bud sites from the bottom 1/3 of the plant as measured from the top of the soil, to the top of the plant. Hope looks like she could use a light defol at the top, where you would just be taking the larger fans that are covering a lower 'top' that would grow better if the leaf was removed. Bernie is behind by a few days, but is female and should flower more.
Looking great overall, they have come a long way. From here on in, patience is key - more isn't better. I recall that you are in PJ's soil...and you have pretty good plant/container size, so you shouldn't have to feed too much. They will want CalMag in slightly higher doses during the first three weeks of flower. I use 4ml/gal to supplement my city water that has very little Ca, and up it to 5ml during the first week, then 6ml for weeks two and three, then back down to 4ml for weeks 4-7, then nothing for the last 2 weeks. From your prior deficiencies, I'm guessing your water is somewhat similar. Other than that - maybe PJ will pop in - but I don't think his soil requires much if any feeding/nutrients.