First - You should have better (1 more) lighting since you have so many plants cramped!
Second - You should have 2 fans, 1 for exhaust and 1 for intake so air is constantly moving through the room! Regardless of constant room temp.
Third - your attics grow room area may be good for temp. (around 80 right) My question is... is the temp the same at the floor of yuour grow room as the middle and top?
Fourth - Your indicas huge fan leaves will end up blocking out alot of light from the sativas. Other than that overall nice plants!
Fifth - you also said it was first week into flowering you should have transplanted them to larger pots (about 1 gallon/foot of plant) atleast a week prior to changing the lighting so the roots have more room to spread and the plant can release its full potential!
A light fell on the plant we just harvested and it produced some very sweet ganja... almost shed a tear cutting her down!
Good luck with your current project and future projects!