I used to think the day/age theory could be used to resolve Genensis with an old Earth. However, a careful study of Genesis does not permit this. Death does not come into creation until Adam sins. Evolution (particles to Man) requires untold generations of life/death.
The Bible documents a very recent create (a few thousand years ago.) The Bible gives the geneology of Adam to Noah. And from Noah to Jesus. Following the counfounding of language at Babel (5th generation following Noah), Mankind spread across the post-flood world. Bill Cooper in "After the Flood" shows in non-biblical/pagan sources (predating Roman conqeust) that the British, Irish, Saxon, Norwegian geneologies trace their ancestry from Noah or a son of Noah. This time frame amounts to thousands of years, not billions which evolutionists claim evolution requires to "work."
And the Bible specifically says there were no deaths of any creature prior to this? Could not this mean deaths of a creature with a soul? Bottom line, I don't interpret it the same way as you.
The Bible gives the geneology of Adam to Noah. And from Noah to Jesus.
And Genesis doesn't give any detail about what came between, and how long the time period was from the "dust" to the "man". I chose to interpret Adam as being the first creature with a soul. The first "man", yet his parents were not human, by God's standards, as they did not have a soul. That could certainly have been only a few millenia ago.
People of good faith can interpret the Bible in many different ways. Just look at how many Christian denominations there are, each with very honest and good people among their ranks. This is just another of those religious arguments that will never be settled. I don't mind if you teach things that I don't believe. Unless and until you insist on your particular interpretation be taught in public school. That's a bridge too far.