I think you'll find that a CRI is the minimum required to conduct instruction on the Cessan 208 Caravan - and your licence would be endorsed 'CessnaSET' for a SET Class Rating on all Cessna single engined turboprops. Diffrences training would be needed to use the 'CessnaSET' SET Class Rating on other Cessna turboprops.
See JAR-FCL 1.215.