One or two questions come to mind here: First, you stated that "Semi-Pelagianism" i.e. - "(human will preceeds grace in the order of salvation)", is denounced by the RCC. OK, that works for the first go-round of baptism, but what about the "choice" you spoke of above? Mortal sin kills the soul, and with it sactifying (or saving) grace is also destroyed and lost, so what saves you now? What now 'satisfies' the wrath of Almighty God for the second, third, forth, etc., go-rounds? It's Pennance, right(?), (contrition, confession and satisfaction), an act clearly inititated apart from God's grace by the sinner who wishes to repent, the will of the sinner now preceding grace. I really am just guessing here, but perhaps this is why the RCC is said by many to hold to the doctrine of "Semi-Pelagianism"?
From Trent, perseverance and repentance are a grace with which we must freely cooperate:
CHAPTER XIII.
On the gift of Perseverance.
So also as regards the gift of perseverance, of which it is written, He that shall persevere to the end, he shall be saved:-which gift cannot be derived from any other but Him, who is able to establish him who standeth that he stand perseveringly, and to restore him who falleth:-let no one herein promise himself any thing as certain with an absolute certainty; though all ought to place and repose a most firm hope in God's help. For God, unless men be themselves wanting to His grace, as he has begun the good work, so will he perfect it, working (in them) to will and to accomplish.
This harmonizes with the following paragraph that concludes Orange:
According to the catholic faith we also believe that after grace has been received through baptism, all baptized persons have the ability and responsibility, if they desire to labor faithfully, to perform with the aid and cooperation of Christ what is of essential importance in regard to the salvation of their soul. We not only do not believe that any are foreordained to evil by the power of God, but even state with utter abhorrence that if there are those who want to believe so evil a thing, they are anathema. We also believe and confess to our benefit that in every good work it is not we who take the initiative and are then assisted through the mercy of God, but God himself first inspires in us both faith in him and love for him without any previous good works of our own that deserve reward, so that we may both faithfully seek the sacrament of baptism, and after baptism be able by his help to do what is pleasing to him. We must therefore most evidently believe that the praiseworthy faith of the thief whom the Lord called to his home in paradise, and of Cornelius the centurion, to whom the angel of the Lord was sent, and of Zacchaeus, who was worthy to receive the Lord himself, was not a natural endowment but a gift of God's kindness.
OK, I don't want to press this too far, but how am I misreading Canon 13 of Orange? I will grant that this Canon talks primarily about God's grace preceding faith. Fine, but does it not also, clearly, state that our "freedom of will was both destroyed (or better, extinguished) and lost in the first man"? How does the primary point of this Canon diminish or change the meaning of these words (that man's will was destroyed/lost in Adam)?
From the concluding paragraphs of Orange:
The sin of the first man has so impaired and weakened free will that no one thereafter can either love God as he ought or believe in God or do good for God's sake, unless the grace of divine mercy has preceded him. We therefore believe that the glorious faith which was given to Abel the righteous, and Noah, and Abraham, and Isaac, and Jacob, and to all the saints of old, and which the Apostle Paul commends in extolling them (Heb. 11), was not given through natural goodness as it was before to Adam, but was bestowed by the grace of God.
This is a more explicit explanation of what Canon 13 refers to when it says free will has been destroyed and the statement must be understood in this context. This is the same definition Trent uses below:
On the Inability of Nature and of the Law to justify man.
The holy Synod declares first, that, for the correct and sound understanding of the doctrine of Justification, it is necessary that each one recognise and confess, that, whereas all men had lost their innocence in the prevarication of Adam-having become unclean, and, as the apostle says, by nature children of wrath, as (this Synod) has set forth in the decree on original sin,-they were so far the servants of sin, and under the power of the devil and of death, that not the Gentiles only by the force of nature, but not even the Jews by the very letter itself of the law of Moses, were able to be liberated, or to arise, therefrom; although free will, attenuated as it was in its powers, and bent down, was by no means extinguished in them.