Looks good for your first time! Only thing I could suggest at this point would be to top a lil more. The more the better in my experience. You can see in my grow thread I try to get 10-12 toppings in before I make the flip. I say that as it looks like even after the stretch u are going to have some wasted space in the middle. I too and I don't cut the lower branches off until I flower because those are the ones I mainly rely on to grow strait up and fill in the middle while the rest of the plant stretches outward toward the edges of the screen. Hopefully that helps a little. I copied some pics out of my thread of my last crop. That is 2 days after the flip when the photos were taken
How are you keeping the humidity up? Do they have some sort of dome or lid? I've had good success rooting straight into soil but I've always had to keep the plant happy with a humidity dome for a while. They get enough light?