Took long enough but now they're starting to show signs of preflower. They come from regular seeds so I'm very happy that I only identified female flowers.
@Gabarram, Yes, the strain is mainly a sativa landrace from the mantiqueira region that's been pollinated by wind time and time again. You never know what's in the pollen, that's why I think they might be hybrids. But they're most definitely sativa dominant.
I also recognize a trait that I introduced to this one friend that gave me the seeds. The reddish tint on the stalk is from another landrace from the Brazilian northeast known as "manga rosa".