Response to OP
Hi Chad. How are you?
I enjoyed your post, but as a non-believer (I guess I'm an atheist?) I consider none of those things you mentioned to be coincidences. Also, I don't think that any of the atheists I know would consider those things coincidences, either. Our universe operates according to laws, and as long as time is running forward, effects follow causes. The things you mention are all effects that follow causes, and that seems natural enough, right?
As to whether or not the universe is the effect of some cause, or whether it is somehow is not an effect of another cause, is still unknown. (As are any specific ways that this might happen). God believers (of whatever god) simply go an extra few steps and suppose a cause of the universe, and then suppose certain attributes that that universe-causer-god must have.. according to their own belief system.
But at any rate, I don't know of any atheists who would say that those things are just coincidences. I hope that this helps, as it is "straight from the horses mouth," so to speak.