I would look to get that room a bit warmer for sure, You will end up with some very nice dense caked buds off these ladies with these temps for sure! only problem will be somewhat losing out on size, If we get a bit warmer in there we can get the best of both worlds. Keep up the great work friend
Looks good man. Your lights on temps are a little low. 72 at this stage of development will cause slower growth and smaller bud site formations. The first 4 to 6 weeks high 70s to low 80s will help make much larger buds. after that lower temps of 77 and 10 degrees less at night will help form them up nice and dense and you will get much more resin production. Keep up the good work ! Also look into getting a PAR meter and a thermal gun to read your plant tops and get the maximum potential from your equipment.