Your previous statement ... "If there was a truly Judaism oriented Messianic shul....I'd be interested" implies that the Judaism oriented Messianic shuls to which you are familiar stress rabbinical or talmudic traditon first and foremost when it comes to establishing a meaningful relationship with G-d. Is it your belief that "a truly Judaism oriented Messianic shul..." would instead stress ones relationship with Yeshua first and foremost followed by rabbinical or talmudic traditions? What is your definition of "a truly Judaism oriented Messianic shul...." ?
Sorry, i didn't answer your 1st question. Ideally, where I am in my faith....I prefer straight Judaism, (I'm very grounded in the knowledge, and understanding of the b'sorah). But please dont make assumptions. Although I'm heavily biased against what I've experienced in "Messianic congregations".
Judaism teaches the Torah existed before the creation.
Such a statement is not all that different from some Christian seekers who have expressed somewhat of the same comment ... "If there was a truly oriented Christian Church....I'd be interested." In a way such comments really aren't all that different from Adam putting the onus on Eve. Adam's transgression and later Israel's many transgressions suggests that even with "a truly oriented synagogue" that mankind's best choice for seeking Truth and Life is one's spiritual acceptance of Moshiach Yeshua as LORD and Saviour.
John 14:6 CJB
Yeshua said, “I AM the Way — and the Truth and the Life; no one comes to the Father except through me.
Concerning the "law of sin and death" (with respect to any transgression/act of disobedience) first began with Adam and Eve. The only way the Israelites knew they were being disobedient/transgressing/sinning (with the result being death) was not before, but after God established the "laws" in the Sinai Covenant, which when transgressed resulted in death.