Sometimes, you just need someone to tell you to go for it so you feel better.
So, Go for it!
Its your plant. Just trying to help you out. I have been in the same position and wanted so badly to harvest. In the end, I am ALWAYS glad I gave them and extra week or two.
Here is a bud on a plant that will still gor for about another week. Notice how the pistils are not pointing out. They have dried up and are "hugging" the bud, the calyxes are swollen so there is less of the sugar leaves showing, there are no new white pistils, The bud is coated with trichomes. Overall it looks less pointy and more round and full.
This plant had some issues with P lockout which is the reason for the spotting on the leaves but I didnt try to correct it so late in flowering.
Here is a bud that looks like what I see when people want to harvest early:
Notice the upright pistils. Some have turned orange but there are still newer white ones. The bud is more green than anything and is slender and pointy. The sugar leaves are prominent because the calyx havent swelled. The leaves are frosty but the rest isnt. Again this is because it hasnt filled out. When the bud swells, the whole thing will look frosty and full.
This one has 2 or 3 weeks left.