I might have been a little high on the energizer additions but just being Hibiscus, honey and a little lemon this must might be low on the nutrients naturally. 3tsp of yeast nutrient for sure and 1.5 - 3 tsp of energizer should be fine. I like to add some of the energizer up front and split the rest over 3 additions within 3 days or up to the 1/3 sugar break point.
And yess too much nutrient and that can cause some funky flavors. But what is above will not hurt you.