looks like you are nearing harvest window based on presence of amber trichomes, unless those pics are exclusively from top colas... top colas will mature faster.
Google for varied opinions on what % of amber is right... more amber generally means couchlock / sleepy feeling. it has to do with the degradation that occurs in the THCa molecule.. it is a new chemical with different psychoactive properties than "THC".
scope at mid level too... take an average... OR you can stagger your harvest. if the top colas are done, lop them off and give rest of plant a week or two more. The stress is severe, but there will be no time for it to grow male organs, even if it wanted to. Lower lights for new canopy height and come back later for the rest.
Don't look at trichomes on leaves. those are irrelevant. Layers are added costantly... trichomes on buried calyxes are likely mature, so it's a bit of "art" to average it all out and choose. Trial and error to find your preference of early-mid-late harvest and anything between. Start with info from here and google, but then trust your personal preferences. Try a later harvest next time if you take an earlier one this time... When you know what you like, and you have seen it a few times, it becomes second nature.