i defoliate 2 weeks after flower for last time,but ya if you just defoliate wait about 2 weeks before you flip the lights im telling ya them plants gonna double in size.
i re looked at your pic,yep wait a week or so then flip your plants will stretch almost up to that net you have up there be right around 3 1/2 ft tall even you work your light right.
your gonna have to walk your light to control them from getting to tall mate when they stretch your gonna see that what you just took off doesnt matter it will double back.
that said i have even finished off buds with no leaves at all last 2 weeks i took all leaves off and they still fatten up,let science explain that shit hahahh.
hey do what you want it your gear this forum is for all suggestion and method but i live in texas,i have a tent in a utility room with no ac or heat i grow weed with forced wind only so thick ass leaves in my tent dont flyin no time at all i get pm with all the foilage even with extra fans in the tent,so your call mate good luck