I, as a Lutheran, am obviously of the opinion that the Lutherans confess the historic faith.
But I wonder about your #2.
Personally I think it is the “systematic approach” that often leads Roman Catholics down the wrong alley. What is a “systematic approach”, and why is it necessary? Why not take the doctrines as they are simply given to us by the word of God?
When I hear “systematic approach” as a reason you think a doctrine is sound, I worry. It seems to me that involves taking a doctrine and systematizing it until it sounds acceptable to human reason and human wisdom.
1 Corinthians 1:17
For Christ did not send me to baptize, but to preach the gospel—not with words of human wisdom, lest the cross of Christ be emptied of its power.
1 Corinthians 2:13
This is what we speak, not in words taught us by human wisdom but in words taught by the Spirit, expressing spiritual truths in spiritual words.