The correct dose of phenelzine is dependent on your tolerance to its activities.  The range goes from 60mg to 120mg/day.  I generally like to space all my supplement dosing out to three times a day with food.  For phenelzine I specifically time it around the ingestion periods of DMT.  If you are doing a single dose I would generally advise a quarter of your dose ~3-4 hours before, half 30 minutes before, then a quarter 2-3 hours later.  If you are doing successive doses, spread the doses evenly over the time period starting an hour and a half before the first dose.  Phenelzine is a very powerful drug.  Thankfully, it also has a very low body load, and is generally well tolerated.

To role-play a shaman for a minute: Phenelzine is calming, soothing and generally very warm and encouraging.  Imagine that it is like a protective golden aura that illuminates everything around you.  Phenelzine is gentle and nurturing like a mother.  Harmala is cold, hostile, it doesn't want to be in my body.  It wants to escape.  It can be bent to the will of man, but it is not a willing servant.  It fights your efforts, draining your energy and causing fatigue.  Caapi is meeker and more submissive, without a lot of character, but causes digestive irritation.