4. Persecute Christians
It's not preferable, it's just bad in a different way. You're positing a theological unity that isn't there. It doesn't exist between Christians and (non-Christian) Jews either. If those seem like hard words, the Scripture is harder: "Who is the liar but the one who denies that Jesus is the Christ? This is the antichrist, the one who denies the Father and the Son."
Did the Israelites not believe in Monotheism? Do the modern Jews not believe in Monotheism?