Hey, should I continue training or let them grow a...

I'd spend 2wks getting the smaller 2 looking like the bigger 2.No worries if you run out of space as you can always cut some of it back.2wks training plus 2wks growth and they'll be ideal to flower or even sooner.Check mine out.They had around 10-12wks training.

I'd stop training and let the grow upwards from here on. They'll get more buffy, and you don't have much space left. You have too many plants for scrog, in your grow space 1 plant should be enough to fill the screen.

A good scrog, not those weird lose nets, is always good. But obviously more work too, if you have a quality one and wanna invest time it will be worth it for sure. I Have a grow with a scrog as diary if your interested in visual material

It's best to have a target / goal, then work backward from there to form a plan to shape the plant effectively and efficiently.. So, you shoot for 2.5-3 colas per sq ft and you simply get the job done with however many plants you chose to grow. more colas per sq ft only crowds the buds. causes extra stretch and smaller buds with more trimming per gram. That's all you need to max out yield in all be extreme cases. a plant that forms smaller colas might need a little greater areal density