No, it is not enough for Catholics, for whom Scripture is not the supreme or determinative authority, even after Rome finally provided an infallible, indisputable settled canon in the 16th century, and yet that was not the point.
For as you must know, affirming a source to be Divine, and declaring what it means are two different things, and which was the issue, and that the parameters of magisterial teaching leaves RCs with a great amount of liberty to interpret Scripture to support traditions of Rome as they understand them, (even if they do not rest upon the weight of Scriptural warrant).
That was no formal canon of Scripture prior to Trent is an old Protestant canard. The canon was set in 381 and affirmed when St. Jerome was commissioned to produce a Latin Vulgate translation of it. It was re-affirmed at Trent in response to the Reformation's challenge to it and the removal of books previously canonized. The canard has been propagated to give cover and credibility to the Protestant canon.
Let's agree that we can have different theologies, interpretations and doctrines, but matters of documented history are not subject to convenient revision.