I went ahead and filled the soil to the top of the pots with FoxFarm Happy Frog and I also began uncovering the seedlings from underneath their clear plastic humidity dome cups.
Next week, they all go into the Grow tent!
@payara, it's a King Plus 1000w LED Grow Light Double Chips Full Spectrum with UV and IR. (Energy saving: just consumes about 185w power, the electricity is 0.185kW·h per hour.)