Hi Eden One
Thanks for your very interesting theory to harmonize a literal belief in Adam and Eve with "theistic evolution."
To me it is clear that there were humans living way before bible chronology. There are just so many proofs for that (for example cave paintings Cosquer and Chauvet Caves). I kind of believe in "theistic evolution" and I once also tried to harmonize it with a literal interpretation of the Adam and Eve account.
You can look at it from different views.
1. Adam and Eve account is symbolic and not literal (tree of knowledge ... and tree of life seem quite symbolic) and Adam and Eve a symbol for mankind and its fall. 2. Adam and Eve literal but account just from a viewpoint of an observer in Eden (like Gen. 1 from an observer on earth). 3. Adam and Eve result of God creating humans through evolution (imparting soul), maybe a description of not just one couple. There are many ways to look at it, a lot of mysteries.
One thing is sure for me. WT viewpoint completely wrong as it dismisses all scientific facts, facts not just theories.
Edenone, maybe we can speculate another time more.