It looks pretty close dude. I always harvest according to what this guy says..... Zeus's Take on Harvesting Best of luck!
[quote name='"burnintrees407"']kinda hard to judge by the pic, you can chop now but I'd say wait at least another week or 2[/quote] I agree. SignSmoker
You should begin the flushing process now and look to harvest in a week or so. But the link to Zeus' take on harvesting is very informative and helpful when considering how ripe your plant is.