While I agree with the rationality part, I have a nitpick with the truth part.

When can't you eliminate the word "true"? When you're generalizing over map-territory correspondences, e.g., "True theories are more likely to make correct experimental predictions." There's no way to take the word 'true' out of that sentence because it's talking about a feature of map-territory correspondences in general.

This is a realist position. An instrumentalist approach is that realism (= map/territory distinction) is a model in itself. Hence the definition of the word true: "theories that are more likely to make correct experimental predictions are provisionally defined as true in the map-territory model". Thus in instrumentalism "true" is replaced with "useful": "theories that are more likely to make correct experimental predictions are more useful", without any ontological claims attached.