Coco scrog at 30 inches

[Norcalfarmer]

My second coco grow, running 4 jedi kush, 2 in bubble buckets and 2 in 5 gallon straight coco under a single 1000. They are at 30 inches and ready for flowering but was wondering if is too late to run a scrog? Will a scrog help my yield this late in the game? Any recommendation on a bloom nute regimet. Im running the lucas with gh flora at 6
ml micro 9ml bloom and 5ml calmag ph at 5. 8
was going to run some beastie bloom at week 5 and was considering cha ching?

Thanks