There was some discussion about pot size in the octo thread. Right around post 800.
There was also some discussion about rolling down the grow sleeves elsewhere in the thread but I couldn’t find it (and I was just reading about it a couple days ago). Iirc I believe some people said something about leaving a height of 9” when you roll the bags down but I’m not 100% sure. I haven’t used the octo pots myself. They definitely pique my interest though.