It is great to be this well-read and cultivated, as I hope to be one day. I have tremendous curiosity towards Buddhism, and find -to say the least- its concepts and notions as thought provoking.
I am glad I was this joyful read to you. And I thank you for giving me this attention with this well known type of argument towards this persistent demand of our subjectivity that is the necessity of having a Being, the First Cause to sustain our conceptually limited perception of the Universe and it's origin and purpose.
The notion of complexity escapes the grasp of our competence to rationalize, specially when the scope of "evolution" in this world is so wide, and also appears to be so because we make the world fit into our categories to make sense.
But, in all honesty, having creation be by itself or by something external to it, or if itself has consciousness or not, both seems suspicious to me (one more than the other) and for now, that keeps up my wondering. Because, as a human, I find that there are things that escape the reach of words, meaning and sense, maybe it's intuitions of a conection or a source. Let's wonder!