They are progressing nicely, I should be able to start LST in the coming days.
Plant on the right is noticably behind in development, probably a day or so, but that shouldn't be too big of a problem.
Update: This week they made a lot of progress, gaining a couple of centimeters in height. The plant on the left and the one in the back are showing healthy growth.
The plant on the right is showing symptoms of some sort which I'm not quite able to pin down, although I suspect it might be HLVD or another viral infection as all plants were treated exactly the same.