They look great. But, for goodness sakes, get a magnifyer. Why in the world would you risk harvesting early or late when you can get a 30X scope from Radio Shack for around $12 or a jewelers loupe on e-bay for under $5
You cannot tell ripeness of trichs with the naked eye.
Seriously, your plants look beautiful! Take the advice from THG and get you a scope or something, it would be a cryin shame to harvest too early or late.