Best bunch of seedlings I have seen in sometime. Really like all of them. I have the same problem planting them in pinebark in a box, those roots really run. If I see one I want to keep or have sold on the auction I may damage three or four near it getting it out of the box, it doesn't matter because I am likely going to compost those anyway. No matter how close those seedlings are planted they will bloom and remember you will compost 99% of them anyway even if you pot them. Lots of double work, I would leave them where they are and spread the new ones more.