First off....nice looking buds. The amber you are referring to are the trichomes not the pistols. Pistols are those hairs. The only way to check the trichomes ( the frost on your bud and leaves ) is with something that can magnify. Like a jeweler's loupe. I had bought mine off Ebay for $5. Works a charm. If you are unable to do this you then go by how the pistols look but this is not as good as checking the trichomes. I see a lot of red hairs and still white hairs here and there. You are very close. It depends on the high you want too. Head high you harvest more early ( when the trichomes are mostly cloudy ) . If you want a body high aka couch lock, you harvest when the trichomes are more amber. They turn amber after milky. Anyways, I personally would give them another week, maybe two but that's me by how they look. You can also always take some off and let it dry for a day or two and try it. If you like it, chop away. If not then let her go a little longer. Good luck. They are nice looking healthy plants.