Start flushing at around 90% brown pistils and harvest at around 95% brown pistils for peak THC and a mind bending head high.
If you prefer a CBD influenced heavy body stone type of effect, change those numbers to 98% and 100%.
Don't worry about what is written on the packet, they are only meant as a guide and are not rules, besides, your plant can't read!
Nicely done though, great training!
Hope this helps, Organoman.