One of the reasons you may not want to convert your image to BW is because you may not be able to achieve the separation you want of the elements in your photo. The leafy plant in the foreground is an example. Although the highlights do draw your attention somewhat, the majority of the plant disappears into the background. In some images that may even be desirable but it’s a danger if there are too many similar tones that the image remains a little too two dimensional. I played around with the colour a bit in this image - it’s a combination of one of Fuji’s sims (maybe Classic Chrome) plus Fuji Pro 400H and Porta 400. Sounds more of a mish mash that it probably is but I suppose that’s the beauty and flexibility of PS. Everything can be ‘salted’ to taste. I’m also liking the colour reflections in the water.