An unbeliever cannot be an authority on spiritual things, which includes authorship of the sacred scriptures, because such hates Christ and his Church.
I suspect many, if not most of those biblical scholars who do not believe your claims of authorship are Christians, who probably do not think they 'hate' Christ. Or is this a one true Scotsman moment.
Divine logic is all that matters, not human logic.
Logic is logic - it matters not from whence is originates, it must be logically consistent - that's the point. And an unsubstantiated assertion that relies on another unsubstantiated assertion for justification, which linked back to the first unsubstantiated assertion and goes round, and round and round until you are dizzy from error in logical thinking sure doesn't fit that bill.
I have no problem with you telling us you 'believe' something to be true - I do have a problem with you claiming it is true without proof, which you don't have.