Bro, I remember when I started blind... Just following bottle instructions in tap water.... I did know to use half or less to start with but it worked out. Couldn't believe I actually grew it. But with your experience and this forum like like you got this shit rollin. Just keep it up. They are gonna start taking of before you know it. I know you wanna do all 12 but honestly I'd do the 6. Take a couple cuts off the best plants and start some mothers. Then take the cuts off the best of those and have 12 ready for the next run. That way you get your feet wet and your not trying to grow cuts and big plants at the same time. I'm not sure how that's gonna work out. That's if I understand what you're trying to do.