@mayocid1, I'm sure this is all overwhelming. There is so much to absorb, and it's all new!
I know unfortunately there are sometimes financial limitations, but a second opinion does sound like a good idea for you. Being near a large metro area has its advantages when looking for a cancer center. Looking at NCI (National Cancer Institute) accredited hospitals in the Detroit area, I see listed: Barbara Ann Karmanos Cancer Institute at Wayne State and the University of Michigan Rogel Cancer Center. I have also heard wonderful things specific to lung cancer at Henry Ford Cancer Institute. Of course, it takes a good match between the doctors and patients, you need to trust them, and there are too often financial considerations and limitations.
"Lung Cancer" is a classification that is very broad. There are many different types, and some types are identified by biomarker testing that is done on biopsied tissue, fluid, or blood. These types are known as cancer caused by a mutation in the cells (EGRF, ALK, ROS1, ...).

There's a fine line between feeling armed with information and overloaded. You're not expected to know everything all at once, take the info in small bits, and take time to digest a bit too. Are you feeling ok with the plan?