I don't read St. Paul's mind, but I believe the Holy Scripture and there he did nor provide the table of content. He simply pointed to scripture traditionally known to Jews of the time, so we have to accept his judgment.
Yes the Church did not put every book that was ever in Septuagint into the Canon. But those seven she did put into the canon as early as 4 century, -- and no Christian canon existed earlier.
You are confusing "canonical" and "inspired" again. The second category is much larger.
Nope...I'm not the one who is confused here. You stated:
It is obvious that the "Scriptures" to which Paul referred in his letter to Timothy mean the traditional Jewish Scripture that they kept in their synagogues, studied, used and obeyed because they came FROM Almighty God. We know for a fact that the Jewish Scripture NEVER included those Apocryphal books - they weren't even written in Hebrew which WOULD have been the case for any writings the Jews kept in their temple/synagogues. If you say you have to accept Paul's judgment, then accept that he would NOT have meant those extra-biblical books as Divinely-inspired Scripture. There IS a difference!
For a well done article on the Apocrypha, the Septuagint and the Canon, please read The Apocrypha, And Why It's Not Scripture