You are correct, I am concerned about spending more money on a car than I have ever before. That said, thank you for the JB4 advice. I've spent some time over the last few days looking into the JB4 and I don't really see any down-side to taking this route. For that reason, I opted to forgo the RS and am now looking for a similarly configured 2017 or 2018 SS rather than a 2016 RS.the JB4 is not a flash tune and is completely removable. Have you ever watched Tommy Boy? CPO=brake pad warranty.....like a warm blanket. Obviously it's your choice and your money, but given that your initial post seemed highly concerned about spending twice what you normally spend on a car, there are cheaper alternatives that are just as reliable and would give you the power you want.
At the time of my original post I was excited and in full-on tunnel vision. So, thank you for getting this advice through my thick skull and preventing me from making a decision I would likely have regretted later.
Thank you again. It is taking time...but I will one day join your ranks!