There is a certain degree of freedom with regard to what one may believe about the interaction of grace and free will, but Catholicism affirms both.
I was also going to suggest Jimmy Akin’s Tiptoe through TULIP article for a sort of semi-Calvinist position made compatible with Catholic teaching. My own position also is neither Thomist or Molinist, but I don’t fully agree with Jimmy Akin either.
I did find a really good attempt at reconciling grace and free will that appeared to be orthodox once, so I’ll try and find it for you today when I have time.
From a subjective perspective, whatever the case may be, we must strive to co-operate with God’s grace.
Objectively, however, even our efforts in this regard do not come of ourselves, but are a result of grace.
We, as Catholics, must affirm that it is only through God’s grace that we do anything meritorious but that we do indeed have free will. We also affirm that predestination does exist, although there is no double predestination and nobody is predestined to hell, and that predestination is somehow a result of God’s omniscience whereby God turns the decisions of our free will into His infallible decree for our salvation.
It’s very easy to fall into heresy contemplating these matters, so “tiptoeing” is advised.
Popes have weighed in on this issue, condemning heretical ideas, but there is no single positive Catholic idea. It still remains somewhat of a mystery.
I’ll get back to this thread, but as to the question of faith:
It is certainly a gift of God:
Therefore I want you to understand that no one speaking in the Spirit of God ever says “Jesus is accursed!” and no one can say “Jesus is Lord” except in the Holy Spirit.
**1 Cor 12:3
**
But we can resist the Spirit of God:
"You stiff-necked people, with uncircumcised hearts and ears! You are just like your fathers: You always resist the Holy Spirit!
Acts 7:51
If we see it in this way, then if we are passive and do nothing with out free will and God gives us faith, we will have it. We have to say therefore that “God gave us faith.” Should that result in our salvation, it’s because of our passive conformance to God’s will, and not our own doing.
But we are entirely free in taking God’s gift and throwing it away. Should that result in our damnation, that’s because of our active rebellion against God’s will, and not of God’s doing.