At the outset let me say this categorically. If losing your current understanding of scripture will lead you to abandon your faith, then I would insist that you should absolutely hold on to the vision of scripture you currently embrace. From a Christian point of view, nothing is more disastrous than the loss of faith. So if your theory of the Bible is integral to your having faith in the first place, then stick to your theory.
And he goes the other way as well.
I would say equally categorically that if holding to the inerrancy of scripture leads you to lose your faith, then you should not hesitate to stick with your faith and look for a much better way to think of its nature and use. … What matters is coming to know and love God; theories of scripture are secondary and should be treated accordingly. So if your theory of the Bible gets in the way of knowing and loving God, go find a better one.