Hi Mobo
what a lovely looking plant, she is doing very well under you COB light!
Let me lend a hand here though, due to autos having a limited life span (approx 14-21 days to start flowering and then a 6-8 flowering period approx)
You will find you get a better yield with a long light period say 16-8 on,off or 20-4 on,off. Personally I run mine 24/7 on, with no dark period.This method isn't everyone way of doing it but I get good results.
One thing to remember is that autos are different from photperiod cannabis, which means they don't need the 12/12 light period to induce flowering , they are on a set biological timer and will start to flower after 14-21 days on average with out adjusting you light/dark period.
Nice to dee you have given defoliation ago, I find it a great technique as long as you don't go to crazy with the plucking.
I like the fact that you also used different Kelvin temps for veg and flower, that should give great results.
I have only used 3500K through out the veg/flower periods but still had an excellent yield but you targeted approach should do even better!
Have your self a great grow and good to see your loving Photon Labs wares!
all the best
arty