Fast Buds Purple Punch, first grow ever.

most of the buds look to be turning darker and about 60-70% of the hairs are turning orange now and only some lower buds still have white hairs standingup. very close to chop day ! :) im trying to be patient on starting my next ones so i can use the tent to dry first but its hard !!! i started to get worried about the green stuff on the stem thinking it was algae or something so i started leaving the light on 24/7 to finish her off, wondering if i should harvest the done parts and leave the bottom 25%(ish) to finish maturing. any advice or comments are welcome and very appreciated! i have 2 bubba kush photoperiod seeds, and the rest are autoflowers so i think i will save the photos until i get a few more grows under my belt or another tent. i have 1 purple punch, 4 bloody skunk, 1 forbidden runtz, and 1 gorilla cookies that i have to choose from for my next grow. what do yall think i should pick? since i have 4 bloody skunk i may just do 1 of those and 1 of the fastbuds.