Lovely photo. It seems the waterfall is the raisin d'ėtre of this photograph. The problem, though, seems to be the distracting elements competing for attention such as the out of focus foreground and the bright highlights on the surrounding rocks. Tame these and the photo becomes stronger.
To that end, along with focus-stacking, consider also using a polarizing filter. It will tame, to some degree, the competing highlights of the rock. Alternatively, use an adjustment brush in these bright rock areas set to reduce highlights and exposure.
Consider also using a grad adjustment for the out of focus foreground - try setting it with reduced highlights (e.g. –50) and some reduced exposure (and perhaps some reduced clarity) to bring attention back to the waterfall.
Hope this helps.