I really enjoyed reading your post this week. As a Biology major myself I also have faced this question many times during my time here at Northwestern. I would agree with you that Old Earth Creationism seems the most probable, but like you said there is flaws in all the views and non are perfect. If you would like to explore this issue even further, I would recommend taking the class Science & Theology offered at Northwestern by Dr. Winslow and Dr. Shultz. The class spends a good amount of time digging into the issues of the different views. I loved the class and would highly recommend it to anyone.
Thanks for sharing
Kolton