My first growbox - scrog with 5 different strains

Hey guys. I'm new to cultivating cannabis and this is my first grow, so please forgive me if I make something silly. That said, I'm already into the second week from seed. I bought a colored mix of Green House Seeds, with Super Silver Haze, Hawaiian Snow, White Rhino, Lemon Skunk and Big Bang (10 seeds, 2 seeds each strain). I ordered from Attitude Seedbank and they sent me two Dinafem seeds as a bonus (Roadrunner and Blue Hash). At first I germinated the five Green House strains as indicated in their web site (soaking first and then layering in moist paper towel) Everything was fine, they cracked and showed root within three days. I then proceeded to planting in soil. The White Rhino didn't make it, unfortunately. Some days afterwards I tried with the Roadrunner seed and it turned out nice. I tried the other White Rhyno seed, and got nothing (got the small white root, but nothing sprouted from the cup). Damn!?! I designed and built the growbox myself, taking some ideas from websites and books, and adapting a little here and there.
From design to the real thing it came up like this:



I'll post pics of the seedlings later today. I have some issues on their development. Hope you can help me to get a nice first harvest.

Hi moderators, should this thread be moved to Grow Journals? I'm posting there now, it seems to be the right place.
Sorry for the newbieness.