I absolutely love the balanced effects of mahakea, but it certainly encourages me to be done with my chores, if I drink enough of it.
If I drink mo'i and try to sit still, I feel the edge/energy. I have to be moving around with mo'i. Mo'i for the last couple hours at work is fantastic, or on a Saturday when doing chores around the house. Personally, I could not drink it before bedtime. Everyone is different, but I would need several hours to wind down off of mo'i before attempting to sleep.
Finally, I feel the hanakapi'ai sits perfectly in between the effects of mo'i and mahakea. It's quite uplifting, and whatever the kavalactone profile is, it rounds the edges off of the kavain while not turning me into a sloth, unless I push it a little harder.
Whatever you choose, make sure you continue to pick away at all of his varieties. Chris has raised the bar in the kava industry.