Popping my head in here long after, it's just a really great discussion and content from @gavvet . Just wanted to throw 2 cents in quick.
If the creation took eons and say Adam and Eve weren't the first, what then happens to original sin?
Romans 5:12 "Wherefore, as by one man sin entered the world, and death by sin; and so death passed upon all men, for that all have sinned."
There is also the question that should be asked, was the Bible written by men or were the scriptures in the Bible inspired by the Holy Spirit (God) and written by men?
“All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:" 2 Timothy 3:16 KJV
“Knowing this first, that no prophecy of the scripture is of any private interpretation. For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.” 2 Peter 1:20-21 KJV
You should check out Kent Hovind's creation seminars if you haven't already, he takes a very scientific approach to subject and makes some great arguments.