So nice to see a plant with all of its leaves!!
If the trichomes are half amber, your plant should be well and truly ready for harvest.
I would suggest harvesting very soon, THC will be breaking down rapidly at this late stage into CBD and CBN, giving you a more sedative stone wit very little actual "high". Flushing for another 10 days will lead to even more THC breaking down, so I would suggest flushing for 2-5 days maximum before harvesting, unless you prefer the heavy sleepy body stone of over ripe flowers versus the more mind trippy high of earlier picked flowers, then yes, go for the whole 10 day flush, whether it is necessary or not is debatable.
Hope this helps,.........
Organoman.