Just switched to 12/12 light, THC Bomb and Kerala x Skunk with pics

Hey guys fairly new at this and just looking for input, advice, ect...
400W HPS with Fox Farms Ocean Forest soil with extra perlite
2X4X5' tent
Temps are mid to upper 70s
pH is 6.8 using R/O water
Just started feeding with fox farms nutes adhering strictly to their recommended feeding schedule
The three plants in the pictures are 1 week into 12/12 after a 5 week veg period..approx 19 inches tall
The THC Bomb is the thick bushy one on the right. The leaves are huge...should I trim some or let everything be?
Thanks for any input and advice

nice,try topping or other technicues for getting more grams,,

I was considering some form of LST but is it ok to use during flowering? I know I should have done it during veg but I am kinda learning as I go here lol

Just let them go and do what your doing and see how the plants grow, flower and how the structure is for the next run.