I'd harvest now. But that's just my opinion. It really depends on what kind of smoke you are looking to get. If you hate the "couch lock" feeling, its time to harvest. But if this is going to be a night smoke then maybe stick with your current plan. I would also harvest all at once. Having a plant that is in different stages of drying could be confusing and problematic if not tracked. Mold and rot can appear, and its a pain to trim all week long. They have to be in jars curing once dried and trimmed in order to preserve all the plant, THC, CBD ect ect.