Greatest New Year's gift: Critical Sour

So everything going fine. I'm using a probe hygrometer to know when the plants need to be watered. I'm doing so around the edges of the pot so they stretch their roots to get to it. I decided to put them all in the same pot because I had them from previous grows and i'll be selling them as is, so I can get rid of the pot as well. I later plan to top my plant, LST the two stems, then re-top these two and re-LST everything. I also decided not to feed them already since i'm using ready to go potting mix and plan on feeding them for the first time on week 3 . Is this a good way of thinking? PH was still a mystery for me that week. I'm also sorry for the growlights in the pictures it'll be better next week.