Geoffkait, if you read my posts, you will discover that it was "Serendipity" that ultimately got me where am; although I did have other forms of insulation bound in speaker cloth.
Since it was partially "luck" that got me where I am, I'm not an authority on how to get here (holography), but I can tell you how sweet it is once you have arrived.
Your post sounds very helpful to someone who is trying to achieve the benefits of holography.