Lookin realy good man, seriously those are some trich-covered nugs. From the looks of it the calyxes are swelling up really nicely and your pistils are suckin back in which is a sign your getn close man! I wouldn't listen to my advice as I'm am still noobish on this subject. But you could probably go another week (If you chopped now you'd still be satisfied, because I chopped earlier than this and still got a really decent high). How are the trichs looking??
Edit: looking at the pics again and the pistils are almost non existent, you could chop now for sure. If you want a couch-lock, knockout bud give it a few more days to a week. Right now you would still get a decent couch-lock also though. Its all in your preference