5 feminized ppp...newbie question

Hi all, here are 4 of 5 female ppp...they're about 24" tall,and in 3 gal. pots.I want to bring them inside to finish flowering,and then maybe re-veg.I kept 1 of the 5 plants as a mother and she's under 1- 400watt mh,in my clone/mother room.These 4 plants have been outside flowering now for about 3 weeks,and i want to bring them inside to finish flowering.However i want to switch 12/12 lights to ON during 7pm-7am and OFF during daylight hours to help with slight heat issue....When should i bring them in??If i bring them inside my flower room in the morning,they'll get 12 hours extra darkness....If i bring them inside in the evening,they'll get 12 hours extra light...Which will be less stressful to the plant?

IT would be alot less stressful to give them the extra 12 hours lights on...It would slow your flowering for just that one day but you'll make it up the next when they're back on a normal flowering schedule...:420thought: