To me it makes no sense to do 2 plants or 6 plants or whatever. You do 1 or you do 4..
Keep it symmetrical.
Thatβs said, Iβd be doing it plant if youβre gonna main line youβre taking time to veg and 1 plant will fill up a 2x2 if mainlined - shoot for 16-24 tops.. usually lower growth you can top an extra time, giving you some extra tops.
If youβre gonna push more than 16 you better have environmentals on point, cuz youβre gonna have a lot going on in a small spot and can get WPM and humidity issues..
Iβd go one plant 16 tops. Youβll be able to flip after 6-8 weeks if you grow decently. Good luck