By all means ignore all the evidence if that's your ken. I prefer to stick with what the good book itself says about its own central theme. For me, there is no more reliable or better witness. As for the idea that the centrality of the messianic theme is 'my take', you must be totally unaware of E W Hengstenberg's monumental and seminal 'Christology of the Old Testament', among many other lesser works on the same subject. I'm more than happy to find myself in the company of arguably the greatest evangelical scholar of the 19thC.
I really don't see how any view of Scripture that gives Jesus less than a central role in its unfolding drama can avoid the charge of being dishonouring to Him. If you're comfortable with that, knock yourself out. But next time you get the chance to watch the film Dune, grab it. It was panned by the critics - in my view undeservedly so. Not because it doesn't have its faults. There are many. But because they failed to grasp exactly the same point that you fail to grasp about the Bible. Watch it, and who knows, you might learn something you didn't expect.