I don't wait for amber. The THC can degrade just fine once it's off the plants and safely in jars.
Still a lot of white hairs on them yet so another week or so at least to get them at their peak. I copied a couple of the pics to the PC so I could blow them up for a better look. Little fuzzy but the trichs look almost half and half clear/cloudy so I wouldn't wait too much longer.
A pic or two of the whole plant and some buds from the side would help. Some strains really fatten up a lot in the last week or two so you don't want to jump the gun.