For bigger mods like this I'm usually relying on mod author preparing RSO configs.
So I tested this on my own install, using the preview panel in the new game page to test generation and following the instructions at the bottom of your description, adding the code to the bottom of data.lua and the init function of control.lua. I got it to load all of Fishbus's custom ores just fine, but it still won't load the vanilla ores. None spawn at all, not even the starting patch. Of course I could just add those to the list of ores to ignore too, but at that point why bother having the mod at all?
Any ideas?