Wow that space is one giant lush garden from the photos previously in week 3! Yes if youre at 10 in now, a flip could send them near to 20 inches each. Thats alot of room taken up, so your screen will need a good amount of attention through that boost of growth. By the dense growth present i believe a small defoliation before flowering would be good, as well as some into flowering, I think people typically do 2 like that 1 before 1 after. And then train train train.
The plants look great, you've done beautifully this far, now the real fun begins in flowering. :)
Oh PS don't forget to always take a clone or 2 either during lollipopping or other, you may always have a special plant to become the mother.