Sorry it took me a bit to respond, but yeah, they had actually just started pushing out hairs the night before I posted those pics on the 4th. Waking up to your ladies' preflowers emerging everywhere when they didn't have a single one the night before isn't half-bad.
They were feminized seeds, though, but from what I've seen sometimes that claim isn't necessarily guaranteed. Guess it depends on how reputable the seed bank is and what not.
Coincidentally I'm going organic as well, and I've found them to respond quite positively to it. I'm keeping it simple, too: added earthworm castings to the top layer of the soil of the girls' initial solo cups. Next time I think I'll just plant them directly into their final pots, because it turns out Lowryders really don't respond well to being transplanted, and can get lush root systems if not restricted and allowed to get root-bound.
During veg., added primarily Mexican bat guano (high N), with some Indonesian and Jamaican mixed in. Both are high P, but Indo has a little more P available (12 vs. Jam's 10), while Jam has a small amount of N available along with the P).
After flowering, primarily Indo/Jam + (organic unsulphured blackstrap) molasses. I added molasses once during the vegetative cycle as well, just because their stems didn't seem to be thickening up quite like I would have liked them too, so I wondered if maybe they were a bit low on potassium.
Ah, sorry for rambling, I just like discussing all this hogwash.