Regarding “variety of hues” and white balancing on the flame, absolutely true, it’s not exactly obvious what part of the flame to choose when setting the white balance, but putting a gray card in the scene wasn’t practical. So I chose the part of the flame that’s the least translucent, not sure if that’s where most of the light comes from or not.
Regarding “somwhere between 2 and 3”, I agree. I think what 3 really needs is to make the flame brighter, it just doesn’t look bright enough relative to the rest of the image. This would also require reducing the chroma, making the flame look a bit less yellow. Capturing the color of the light isn’t easy!