Crete, I agree with much that you say. But I am not trying to reconcile a biblical worldview with an atheistic one, but with what true science says. These reconcile perfectly as will come out later in the thread.
There is no true science that agrees with the day-age interpretation of Genesis. There is no true religion that agrees with a universe that is billions of years old. Any such position IS the fruit of an attempt to reconcile the atheistic standard model/big-bang cosmology with something that resembles a biblical worldview. In reality it is a perturbation of both or one might call it a bastardization of the two. What you're left with is worse than what you started with.
As for true science agreeing with true religion, the whole premise is a tautology. What is true is true, whether its scientific or religious or whatever but two worldviews who's fundamental premises are in contradiction to each other cannot be made to agree except on an occasional detail and even then by accident. A naturalistic worldview cannot be made to agree with a worldview that acknowledges the supernatural. The atheistic cannot be made to agree with the theistic. One is false.
What you are really saying isn't about science as a worldview but as a method of investigation. What you're saying is that theism is true and more specifically, biblical theism is true, and even more specifically, your implication at least is that your particular brand of biblical theism is true and that therefore it will stand up to the scientific method of cosmological investigation. The problem, I submit, is that you've, essentially, jumped the scientific gun. There is no scientific nor biblical reason to accept the day-age theory. The only people who believe in that nonsense (if you don't mind my frankness) are people who are afraid of what the bible clearly states. By "afraid" I mean that they are afraid that what the bible states won't/can't stand up to scientific scrutiny and so you hedge you bets by accepting what you think is an acceptable middle ground. The effect being that you've loaded the dice in favor of what you think is a scientific worldview but that is actually an atheistic one. Any atheist with any debate skills at all will tear you to ribbons before realize you're even in jeopardy of losing the debate because you've conceded his premise (and contradicted your own) just by stating your own position.
In short, if you're going to have a cosmology that is both scientific and biblical, the atheistic theories about the age of the universe won't survive the process because the bible flatly states that God created everything in six days...
Exodus 20:11 For in six days the Lord made the heavens and the earth, the sea, and all that is in them, and rested the seventh day. Therefore the Lord blessed the Sabbath day and hallowed it.
Exodus 31:17 It is a sign between Me and the children of Israel forever; for in six days the Lord made the heavens and the earth, and on the seventh day He rested and was refreshed.’”
Exodus 31:17 It is a sign between Me and the children of Israel forever; for in six days the Lord made the heavens and the earth, and on the seventh day He rested and was refreshed.’”
Resting in Him,
Clete