Harvest or leave in Darkness?

Hey there growers,
It's almost harvest time in the big smoke, but a family visit tomorrow night means I have to switch off the lights & fans for the whole weekend for stealth reasons.

I like my trichs to be around 20% amber and the rest cloudy but at the moment they are more like 50/50 clear/cloudy.

Q. Will giving them 3 days of darkness and not much ventilation screw things up?
Or am I best finishing the grow a little early?

Here she is -




thanks

if you take em down sooner chances are the stone will be more cerebral, better daytime. im guessing you like it to be couchlock though, pretty stoney. then you would want to harvest later. but the darkness will just slow the flowering process. i was out of town the weekend of my harvest so i left them dark, with a fan on, and then gave them two more days of regular light scheduale then cut them down