Well done, I saw your first article. Interested to see how this turns out longer term. I spent a lot of seat time in my 2004 C4S over the weekend. We threw the winter tires on and put over 500 miles on a road trip to see the fall colors. It is pushing toward 98k, I'm looking forward to breaking 100k soonish. We'll see how the winter goes. My wife did her first turn in the drivers seat and did great after not driving a 3 pedal car for a few years.
I'm planning on keeping mine long term. The exterior looks new, the interior is close to that. It's a great drivers car and has enough creature comforts to keep my wife happy on long drives. Working AC/Heat and seat heaters help in that regard a ton!