Well to try and answer you the best I can then, harvesting early will give you the most energetic effects a strain has to offer and to the best of my knowledge the highest CBD % when you're dealing with hemp strains. After a certain point as you go through flower the high CBD strains are prone to producing THC in increasing amounts. I'd try to harvest early in the window for what you sound like you're looking for. A plant is considered ripe when all the hairs are red and retracting back into their stamen...brachts? I'm not sure of the exact nomenclature but when it looks like the pistils are receding into the bud basically. Then you check the trichomes on the bud, not the leaves and look for cloudy trichs for ripe, clear for early/racy and Amber for going into couch lock to keep it very simple. I like heavy sleepy meds so I go for all cloudy and about 25% Amber. You sound like you're looking for energetic high which would be much earlier with mostly cloudy and even some clear. Hope this helps you and good luck.