In broad terms I accept Sola Scripture. However I only do so as a check on those who claim the church as the final authority.
However, the problem with Sola Scripture lies between what God intended when it was written, and our flawed understanding of it.
Ultimately, our understanding has to come with Holy Spirit guidance, otherwise we are no better than faithless naturally minded intellectuals, and no matter how much we know of scripture, it is of little value before the Lord.
1Cor2v14The natural man does not accept the things that come from the Spirit of God. For they are foolishness to him, and he cannot understand them, because they are spiritually discerned.
Paul makes it clear that the Spirit of God is the final authority, because without revelation, God's intentions will remain foolishness to us.
And of course, there are countless things that God would reveal through his spiritual gifts that can never be judged against scripture.
For the last 40 odd years, the path of my life has been guided through prophecy, visions, dreams, words of knowledge, etc. The majority of which have concerned things like starting businesses, inventing things, buying cars, finding a wife, moving house, and having my life saved by a word of knowledge.
None of the above would be found by Sola Scripture.