no you are right sativa does tend to be taller but if its mixture of the 2 and thats most likely the case it can show signs of both. i cant gauge the height from the pic because i really have no reference. but low stress means tying the taller parts so they are bent over. several benefits can come from that like more buds.
as for what stage they are at..... summer is coming to an end for you yeah? how many hours of daylight do you get right now? if they are starting to show id have to guess your getting maybe 14- 12??
lots of unknowns. it might be an autoflower, might not id guess no but its only guess. either way let em go until the trichomes are all milky or before temps get colder.....does it really even get cold there?
i like the thatched roof in the pic is it real? or one of the fake ones?


just took a quik look at the pics again. one looks mostly sativa the other looks mostly indica(smaller one)