You argue against yourself. To keep the law we need the Spirit, thereby working obedience in us.
Like most who emphasize the keeping of the law, you do not recognize that it is the Spirit that enables obedience, and not the will of men. Keeping the law outwardly may separate men from men, but as we know from Matthew 7:21-23, it does not separate them unto God.
But regardless of what I say, you will find preeminence in the law, and not in Christ. Again thanks for the discussion. Grace and peace.