Yes,8 weeks from seed can happen when you grow autoflowers.all you need is cooler climate and good ventilation.7 weeks is too optimistic in my opinion.i havent grown that strain before but for mostly indica dominant autos,10 weeks is a good reference point.add 2-3 more weeks to what breeders says usually and its done.

I haven't but what I have learned from growing autos is 8 weeks from germination or whatever they say is never the case. Normally just refers to the flowering time. 🌱😁