Lookn good SeaBud . You need to fill your pots up to the top .But wait for the other seedling to pop out of the ground .Also your plants need to be within 2 inch's of the light or youll have lanky plants.Other than that great. Also what lights are you using right now? And remember for Flowering your gonna need a more of a red colored light . But main thing i see that is wrong is your plants arnt close enough .Also about the seedling that has not poped out just let her be she will come out . Also i would not advise goin to 12/12 right now You got alot of room and enough light if you add all the lights you got to veg your plants to like 8-9inchs tall