how long

i have a plant that is indaca dominant and its been 42 days since i first saw white hairs the tricks look white but all i have is 10 times zoom

my ? is what is the average flowering time for a lets say 80% indaca dom plant i plan to give it 3 days of darkness before harvest so id like to get opinions on what kind of time frame im looking @ i'll + rep for answers

thanks

I'd say your average is 8 weeks flower.