Honestly bro you are never done with a build IMO. Even when my car was in the magazines, won 6 foot trophies and cash at HIN and was offered a spot in a movie, I felt I could still improve when just about every part of the car was touched. Technology changes and so do parts.
The best brand is not always the best part as you well know. But like you I got to a point where I wanted more out of my S2000 and NSX. Something I wouldn't find or the technology just wasn't there. I moved on to the BMW M cars and I found what I wanted with them and have never looked back.
I love your car and its one of my favorites on the board. See you on the road. I am head back east as well. Good luck with your move and be safe.