First cause question
You're missing the basic logic question. The idea that complex order requires a human-like intelligence as a primary cause is a prejudice generated by the human thought process, not a logical necessity.
To assume that the Big Bang just "was" without a previous "cause" is no more of a stretch than assuming an intelligent designer just "was" without a previous "cause." Probably less, since the Big Bang is basically a mindless phenomenon of subatomic physics, as opposed to the concept of a vast infinitely complex intelligence capable of consciously manipulating matter and energy across the entire universe and without physical limits.
In any case, I don't particularly want to hash this question out, for reasons given in the earlier post.