well, all of those pistils, white hairs, that you're seeing, will recede back into the buds when they start to get close to being done..
a second thing to look for is the calyx, the main part that makes up the buds, will start to really swell up nicely, you'll know when you see it what i mean..
third, when you start to see 1 and 2, you can start to look at the color of the trichromes and see if they're starting to go from clear, which they all are probably now, to milky, and finally to amber.. i like to harvest when i start to see about 5% or so of the trics starting to turn amber.. oh yeah, go by the trics on the buds, not the ones on the leaves as they tend to turn sooner than the trics on the buds for w/e reason.
in order to see the trics, you'll need a handheld either microscope, or a loupe, i prefer one that's at least 60x power.. radioshack has a decent handheld micropscope thingy that's 60-100x power, that works well, for around, i forget, but it's under $15 and a good invest if you plan on growing more in the future..