I have taken the time......
To read all of your hyper-links.
And I "think" that while they all proffer various arguments for incorporating the Old Testament into the Christian Bible...... They all share serious flaws for anyone not predisposed to ignoring their assumptions, and their literal leaps of fervant faith.
Perhaps there are one or two particular paragraphs/sections within all the material you have cited, that you find to be special significance for the topic at hand?
If so......
Please cite them, and I promise to reply in kind.
Cheers.