Looking Great Jimman - Off to a flyer
When was last watering and when is the next?
I would say that if the pot is heavy, you could leave it a few days to make those roots go on a search and water when the pot is light.
I imagine the down droop on a couple of the photos could be a natural tiredness, but could also be a tiny sign of overwater - not a problem and easy to sort! If they look happy . they usually are

(and they do!)
Day 30-40 or at about 18 inches i would say. I usually kick into full power around day 30-40.