I’m a Catholic scientist (my area of specialty is outside of evolutionary biology), and I’d say that I find the Church’s stance on creation agrees with what most of modern science proclaims. The Big Bang theory and ex nihilo are compatible–time and space just did not exist beforehand.
Similarly, micro-evolution has been proven time and again in the laboratory. Macro-evolution is the one most people have trouble with and is by far the most contested scientific theory. I’ve read Dawin’s The Origin of Species, as well as many books by Stephen Jay Gould and Richard Dawkins. While they lay out a fairly good case for “unguided” macro-evolution, they make a good number of assumptions that may or may not be true–only time and assiduous research will tell.
Bottom Line: There is plenty of room for God in evolution, whether guided every step of the way from single-celled organisms or by some other method.