If you have a moment to express your humble opinion...
MM. Your definition is an apt description of a traditional Anglican view of scripture, but far more nuanced than the term Sola Scriptura now implies. The issue is that the more extreme interpretation of sola scriptura has in fact become the mainstream understanding of it among evangelical protestants. Perhaps the term has perhaps been corrupted beyond vernacular utility by its misuse.
As you know, Anglican faith is generally understood as relying on a threefold foundation of scripture, tradition and reason. This differs from the doctrine of sola scriptura as practiced by many American protestants, who are deeply skeptical of tradition, rather than inclined toward it as Anglicans are, and who in some sects even advocate suspension of reason due to what they believe is its profane nature.