You're either splitting hairs or coming up with a new doctrine. Yes, we're justified by faith in Christ. But to divorce that from repentance or from a choice to depend on Christ's works is unscriptural. We'll have to agree to disagree, but I don't personally think it's anything worth arguing over.The repentance that God accepts, is not to "repent of being a sinner".
Its to repent of being an unbeliever.
To turn from (Repent from) UNBELIEF... .and turn to BELIEF. (Faith in Christ).
Thats "Repentance" that is accepted by God as "Faith is counted as righteousness".
To repent is not necessarily self-justification. It certainly can represent a form of self-justification for those who repent apart from dependence upon Christ. But for those who properly turn to Christ for Salvation, repentance is truly an expression of faith in Christ, in order to be justified by his redemption.