By now you have constructed a veritable card castle on top of a scripture that simply says: learn form me; learn from the Old Testament; be fully equipped for episcopacy. First you transferred the meaning of "scripture" to the entire Canon; now you speculate that the references to tradition in the scripture are also scripture. And we still lack a prohibition to look for extra guidance that you need to condemn the Catohlic/Orthodox development of dogma.
What of the time between 1 century and Carthage (AD 409)? Where in the scripture is the notion that you silently advance, that the first four centuries of the development of the Christian Church are exceptional in that they go on tradition, and after the Canon is closed, a different Sola Scriptura Church emerges?
Where in 2 Timothy 3 is the notion that Timothy's lay students become fully equipped through the scripture alone?
Was the Deuterocanon implied in 2 Timothy 3?
"[Timothy per 2 Timothy 3] is only supplementing the OT with what he is now learning as what would become the NT"
This is the Evangelical Free Church Statement of Faith concerning the Scriptures. It encapsulates Paul's thinking on the efficacy and authority of the scriptures
2. God’s gospel is authoritatively announced in the Scriptures—
We believe that God has spoken through the Scriptures, both the Old and New Testaments. They are the verbally inspired Word of God, without error in the original writings, the complete revelation of His will for salvation, and the ultimate authority that stands over every realm of human knowledge and endeavor. Therefore, the Bible is to be believed in all that it affirms, obeyed in all that it requires, and trusted in all that it promises.