Hey mateLooking good MrB.
Any time I tried 20lt pots in a tent (2/2.2metre in height) using various training techniques, I found by the time the roots had filled the pots to switch them over to flower they were humongous even before the stretch.
The veg time usually consisted of 6-7 weeks from birth, if I go less on the veg time the roots won't have filled the pots..
I was running HPS (still am) maybe this is were we are seeing the benefits of LED?
Just stocked up on whisky and Guinness for a weekend of shenanigans and antics the shamrock ☘ is going to get a good drowning..
Best wishes to you and yours...