Yes, that is what LightMix is intended for :)
Render, adjust LightMix to your taste, save the image from the VFB. You can also save the LightMix setup with the Save option in the LightMix tab. Adjust the LightMix to something else, save from the VFB (and can save the LightMix set up). Repeat until you have enough versions of the image :)
You can then render the same scene from a different camera angle, and simply Load the LightMix settings and save the image each time, to replicate the same LightMix setups - this is scene dependent of course, as it requires the same lights etc as used when the LightMix setups were saved.