Yeah man, its weird. I'm a total noob but I swear I can see white pistils. However, there are several male looking pre-flowers just like you pointed out.
Yeah you are right that it's older than the rest of them. The first set of pictures were closer to the base of the stalk which is where you circled the male looking pre-flower. The second set of pictures I took closer to the top of the plant. This plant is Hindu Kush from Nirvana if that helps at all...
You were right. Plant 1 is a hermy. I pulled it out today. One more left and I'm 99% sure it's a female. She is the most immature of all the plant and has only developed a few bud sites. Does this mean I might not get as many seeds since the bud sites are still premature?