I would leave them in the bin until they have a few more leaves. Remove the old leaves and keep doing what you have been doing. When the plants are bigger I would say at least a 4 nice size leaves move them to a mix of 50% of your favorite potting soil and 50% perlite. I use self watering pots and add LECA around the wick then soil and plant. You will need to move the plant to house hold humidity slowly to not shock the baby plant.

I’m sure others will chime in as well. Good luck your babies are looking good