take a look through my SSH journal.. thats 7 weeks from seed before true flowering, and the net will make sure she copes with weight. Im Lazy AF, and found this to be least work/max yield. I top them at 4 or 5 nodes, and then SCROG them by letting them extend 2, almost 3 nodes through the net, and then moving them to the adjacent square outward.
That is mostly done during the 2 weeks preflower, as they are on a schedule and I need them done in 3 months from start to finish. I usually manage to get the net full. If I wouldnt fuck up my cloning so bad every gd time, I would gain a week or 2 and have overcrowded nets.
My reason for using 2x2 is that it is perfect for 1 plant with not too long veg time, and this enables me to unhook the net and move the plant around with the net supported on its braches and keeping the plant balanced, without having to worry about taking her out of the net.
I'm growing for my own use, and like it ready in time .. my whole setup is catered to a reliable harvest and easy plant handling with the least amount of effort possible (without automating, WIP).