There's so many opinions on flushing! It seems like most growers like to "flush" with straight water 1 to 2 weeks before harvest. However, some will add nutes up till they chop! Since molasses and bloom nutes are so similar, I'm under the impression you would stop the molasses as well.
At least, this is what I do. I used too much molasses on a plant last grow, and almost killed it, so I harvested it a little early and it had a disgustingly sweet taste to it!
Your plants look great--whatever you do at this point I am sure they will end up being some of the best you've ever had!