What size is the bucket you are going to put them in? That probably matters as well. (Ps, saw you marked soilless, not soil). I'm probably useless here, but still curious about next size pot.
@chronicthehemphog, Your plants are short due to lots of good light and most likely genetics. I would go with once 4th node is out, move them to the bigger pots, but wait until 4th node is developed, not just showing. Also I have observed people trying to train at that point as well, don't try to train until they have at least one week in new pots and they appear healthy. Just my 2 cents. Good luck.
pressed was the best, now I switched to blasting bho for aio extraction/filtering until I can find a place for a hydraulics press lol but Gucci Gold as told
Sorry, just reread this. If roots are coming out the bottom, time to move to larger pot. Dont forget to soak medium before you add them to it. (I forgot and it took them 2 days to recover)
transplant successful, but one of the plants roots broke off latched on to the Solo cup but I felt like there's a chance for traumatizing it or something
I've read you transplant after 3rd or 4th node appears, and your plant looks healthy. (Based on a solo cup)...that said, do some googling and get more opinions as I'm a newbie on soil grow. Good luck!