Yes one can hold a theistic form of evolution…(tis a question of the emperical sciences…) so long as one holds the various truths of the Faith…God could use various means in regards the the material world…
here though is an important quote for you Pope Benedict is certainly interested in the various reasonable theories in regards to evolution…but he reminds us too that God is Logos…and any evolution is not some blind chance…:
"We believe in God. This is a fundamental decision on our part. But again the question has to be asked: is this still possible today? Is it reasonable? From the Enlightenment on, science, at least in part, has applied itself to seeking an explanation of the world in which God would be unnecessary. And if this were so, he would also become unnecessary in our lives. But whenever the attempt seemed to be nearing success - inevitably it would become clear: something is missing from the equation! When God is subtracted, something doesn’t add up for man, the world, the whole universe. So we end up with two alternatives. What came first? Creative Reason, the Creator Spirit who makes all things and gives them growth, or Unreason, which, lacking any meaning, yet somehow brings forth a mathematically ordered cosmos, as well as man and his reason. The latter, however, would then be nothing more than a chance result of evolution and thus, in the end, equally meaningless. As Christians, we say: “I believe in God the Father, the Creator of heaven and earth” -I believe in the Creator Spirit. We believe that at the beginning of everything is the eternal Word, with Reason and not Unreason. With this faith we have no reason to hide, no fear of ending up in a dead end. We rejoice that we can know God! And we try to help others see the reasonableness of faith, as Saint Peter in his First Letter explicitly urged the Christians of his time to do, and with them, ourselves as well (cf. 3:15)!
We believe in God. This is what the main sections of the Creed affirm, especially the first section. But another question now follows: in what God? Certainly we believe in the God who is Creator Spirit, creative Reason, the source of everything that exists, including ourselves."-- Pope Benedict XVI
From:
vatican.va/holy_father/be…nsburg_en.html