You seem to be most closely aligned with the Single Meaning, Multiple Contexts and Referents view, a view defended by Darrell L. Bock in the book “Three Views on the New Testament Use of the Old Testament” (edited by Kenneth Berding and Jonathan Lunde, Nov. 2008). This view affirms the singular nature of the meanings intended by the OT and NT authors when OT texts are cited in the NT. In spite of this essential unity in meaning, however, the words of the OT authors frequently take on new dimensions of significance and are found to apply appropriately to new referents and new situations as God’s purposes unfold in the larger canonical context. Often, these referents were not in the minds of the OT authors when they penned their texts. For more info, see the book, or attend a special session devoted to the topic at the ETS Annual Meeting in Providence, RI (Nov. 2008); Walter C. Kaiser Jr., Darrell L. Bock, and Peter Enns will all present their views.