wow. this LN #2 is exactly reminiscent of my LN #3, which has proven to be one of the purest, most potent sativas I have smoked. She was tall, went 80 days or so, and had a spiraling top bud just like yours. I didn't keep a cutting, but I have 30+ F2 seeds from her. Remarkable plant.
Up until her, Mango Haze was my reference point for a good sativa (and still is--by far--for taste alone) but always had a bit of drag and fog to it toward the end. Not so with LN #3, a pure tapering off after 2 hours of a strong, focused high. Possibly a little stronger than I had wanted, but I can always smoke less.
This is a remarkable strain, because it does not appear to be like any sativa I have seen--it really looks like a skunk, like Shit, even. But the effect does not resemble the appearance.