It kinda like asking, How many grains of sand on a Beach LOl
All of the above if its indoors under 400 to 1000 watt lamps i assume
you'll need more that one lamp for 24 plants no matter what.also
im assuming you havnt grow much?. with a question like that soooo
maybe they die beforwe you get too the end Never count chickens before there hatched you'll be disapointed. It sounds like you a plan and need the
smoke to pass on so asking such a question is a hard one to answer.
based on what ive done myself an ozish a plant indoors under lights

Best of Luck