Was missing your updates 
, glad to see everything’s OK on your side. Don’t trust what the breeder says about flowering days, it is supposed to be in optimal conditions and normally state fewer to increase sales.
I start to flush when I begin to see the milky trichomes and previously decrease the nutrients income. I had that problem you mention, if you want some info check my thread “Flushing to soon”, you will see there’s nothing to worry about.
Keep in mind that even after chopping the trichomes still maturing and degrading, so be ready when some amber trichomes appear if you don’t want a heavy couchlock effect. Congrats on your great incoming harvest … 