Nice photo and nice plant!
You could run another 5-7 days, it depends how much you trust your environment for say mould. If you've got you environment down, say 23c and Rh 55% run a few days more but be checking twice daily for mould. Its the killer at this stage, we're in the tropics so especially hardcore!
That said, your gains at this point are going to be really marginal, so pick a time in the next few days when you have time not to rush the chop.
We personally would be thinking about switching off the lights now. We leave them in coco for three days in the dark no more water before we chop and find we get a slightly better finish - we've run side by side tests.
Hope that helps,
Nick