might want to try each way for a couple months but only measure growths the second month, allow some adaption time.
if you remeber, post the results here, so i dont miss it
one thing i left out, a way to put it in a nut shell
with 24/7 lighting the xanthophyll cycle kicks in (slows photoinhibition during times of stress, extended photoperiods) the energy and resourses used for slowing photoinhibition could be use for growth instead, if/with a dark period allowed.