Good morning Sam-
I don't think it matters what time of day you harvest. I choose the morning/day time just because I can see better. I set up my "EZ-UP" in the garden and spend all day out there during harvest. I like mornings best, the leaves/plant seems stiffer when cooler and easier to trim. I suggest not taking the whole plant at once, just a branch or two at a time. If you take the whole plant and it sits around the leaves droop and it's a pain in the ass to trim.
Some (maybe most) take the whole plant, hang until mostly dry, or all the way dry, then trim. I choose to trim when wet, I WANT THAT JOB DONE!
Keep us posted on the progress.
TMB-