Anna, I think they will do fine in a communal pot. As long as the gh isn't too warm, they should stall for a while. I'm thinking about taking some of mine out of their pots and bagging them. They won't take as much space in the hoop house, and I can keep an eye on them in case I need to repot them.
BTW, nearly all the cuttings I brought home already have "nubbies" and are ready for potting! Even DH is impressed!
