I feel you... Being multi-strain and trying to be on a set schedule is what stops me from doing it with more plants... 10 days extra is an extra 25 % veg, 20 days and your looking at nearly 50 % veg. If I'm already getting reasonable g/watt on plants that veg shorter and don't do well mainlined it's hard to work them in... for instance... my jillybean was basically 1.5 veg cycles compared to that of the other plants
For me it doesn't matter if it's popcorn (i'm assuming you'd consider a full developed 2-3 g nugget popcorn looking at your colas), as long as you are doing work for whatever space you have... You can realistically break 2lbs a light with a scrog set up and a single light, you won't get the sweet colas but you will get a beautiful harvest I assure you of that
Anytime you try to push the limits of your yield in your space your gonna have to sacrifice veg time, plant count, or something to get the density of foliage required to put out that much weight, plain and simple. Anyone find a way to beat the system, fill me in