Ripping to ISO is a trivial task, mounting and directly copying over files is not - since that was never my goal, you will have to solve this yourself.
If you want to try something simple, why not extract the iso with something like https://www.tecmint.com/extract-files-from-iso-files-linux/
and then deleting the iso when the copying is done.
That should be fairly straightforward but you'll have to spend some time trying it out. I will unfortunately not invest more time into this.