I think plants that have been pretty much put straight into 12/12 from seed will take longer to show stigma and start budding.
Your working against the plants natural instinct to grow before it flowers. They want to grow, but the environment is telling them to flower.
When plants have been told to flower immediately from seed, or within a week of sprouting in this case, they will take longer to adjust and start budding.
Another week or so at least before you see some stigmas I reckon.
They are staying amazingly stout which is good. It was important you gave them that week of veg when you started them.
When I saw you were going to grow Haze inside this set up I said 'no way', but they're looking great height wise.
This is going to be interesting. All the best.