Germinating now

its not too late is it?

My plan is to veg inside for a while the move outside to flower, i started germinating today and am going to start them in a grow box in my closet.

I live in Nova Scotia so how long should i veg for before i move them outside to flower? also I just started 6 bag seeds so i dont know the strain or anything, how long might it take for them to fully mature once i move them outside?

Im planning to keep them on a 24 hour light cycle then after a while switch to 12/12 for early sexing, should i attempt to just cover one branch per plant for 12 hours instead so it doesent slow the growth?