CBD 1:1 strains are my favorite, and they still manage to knock me out via smoking bowls...
I am never groggy in the morning, actually. I almost never get high in a way that is noticeable to the outside anymore, since I work and play at the same doses to maintain my current levels of activity through a bunch of chronic bullshit.
My active work day dose is something like 300 mg, and at those doses I am comfy making life decisions.
Does your buddy have a favorite nice and terpy CBD strain they like?