I'm not sure if 2g would be enough.
3g is the defacto standard to get the effects you're looking for.
Grinding it up and putting it in gelcaps won't hurt either way.
When I take raw, ground rue seeds, it takes a lot out of me.
Pure, extracted harmalas are way easier on my system.
Either way, experiment a bit to find out your sweet spot and have fun and stay safe.
Convert a melodic element into a rhythmic element...