Beautiful plants you got here bro! I love bubble buckets so much cuz you can individually feed/flush each plant as needed.
You might want to consider getting more than 1 LED to flower out these four ladies properly. I mean they will flower but you won't get the weight or density in the buds you are looking for with just one light.
I use one 600 W LED per plant and I average 1/4lb to 1/2lb per plant depending on the strand and how long I veg. (which is usually only one month) your ladies should easily get that much weight at this size. I guess it is all personal preference but if you are gonna grow it then you might as well make it as big as possible! ;) The only issue I see with adding more lights is you will have heat issues with these tents if you don't get some kind of ventilation.
In any case those are some real beauties! Cant wait to see more updates..