definitely killer for a second grow man. you keep updating the thread and we can tell you when they look done. Sway is right though, best way is to look at the trichomes, takes a bit of practice, I prefer to look at the buds under strong white light, naked eyes no loupe you can see the trichs change color if you got a keen eye, also look for the calyx swell and the pistils browning up. also remember to flush before harvest.
If the seesds were standard male/female they would likely be nirvana, if they were fems they are likely to be from female seeds co. I got some of their ice in veg right now for outdoor.
good luck...