Well, better than nothing! By the way, the archives of the OVRA are lacking a lot of documents, as usual for any intelligence service, even more when sensitive matters, like Fascism and collaboration to it, are involved. So it is not a surprise if your research will be very difficult, but I suggest you to go on with it and be as objective and clear as possible when you will publish it, choosing a good review o publisher for it.
Just think about the several discoveries of very important documents in private hands, when old people from WW2 died and their heirs finally opened their drawers, trunks, etc. The most known case is that of the "Alicicco papers", i.e. the documents given to Alicicco, an officer of the Army, by King Humbert II upon his departure for Lisbon in 1946. The heirs gave those papers (copies of Mussolini's documents, probably from his bags when he was captured by partisans) to the Archivio Centrale dello Stato about 20 years ago, but the heirs of the other officers who had received similar dossiers from the King haven't done the same, with their documents probably lost or destroyed.