This what i did.Is the bottom of your bin a screen or all one plastic mold with holes in it?
Experimenting with this years fridge germ'd chestnuts. Some Burr and Swamp White as well. Started several inside, individual in both 5 gal and 2 gal grow bags, and the rest in community pots for the summer.
In the same boat, not sure if I should break up and pot them or let em ride. Maybe fall plant a few of those and carry the rest through winter. Not sure what's best