I'm sorry Fran.
I just took a guess at SFT'ing it 0.7%. The flavor notes on ELR has folks (6) using it from 0.5% to 2, 3 and 4%. Basically all over the place with no general consensus. My personal experience with Inawera flavors has always told me to start low.
To me, 0.7% tasted strong enough to hold up well in mixes to other stronger flavors (and at much higher percents). Depending on other flavors I wouldn't use marula over 1%. With delicate flavors from drops (p/30ml) to 0.5%. I didn't include that in the notes I posted here because I know how different everyone is in how they use their flavors. Most use flavors a lot higher than I personally prefer.
I haven't mixed it with white or green tea yet. White tea isn't strong, even at 3%. It's a very delicate flavor. Which is why Marula overtook the white tea in your mix.
I do think Marula is one of "those" flavors that requires an SFT. And if for no other reason, because it is an unknown fruit to nearly everyone outside of Africa.