Thanks for the update! They are looking great and your results are giving me lots of hope that my dwarfs just might produce something! They're in six inch pots under fluorescent lights, and like you, are getting tall enough that I'm going to have to figure out some way to suspend the lights higher.
How big of a pot are you planning for your final transplant? I think I have a bunch of 2.5 galling pots and am wondering if those will be big enough or if I should find something bigger.