For ease of use, you don't need to use -ingot -scrap +ore as the script defaults to hiding anything not listed if you provide at least one + item.

For Cargo command, as the guide mentions, Cargo only tracks cargo container type blocks, to use it with other blocks you need to use CargoAll command.
To avoid things like reactors getting counted in this I tend to group my drills and cargo containers and then do something like 'CargoAll {G:Your Group Name}'