Opinions on when to harvest Lambs Breath Auto?

I'd say you have another couple of weeks... her fade is just starting from what I can see. Best if you get a jewelers loupe or some other way of getting a real close look at the trichs - and then deciding what kind of effect you want from her... if you only want a head high, wait until the trichs are all cloudy.... if you want both a head high and some relaxation, get about 10-20% amber showing... anything more than that and you're heading into couchlock territory... so your choice! Good luck! Great looking grow!