I love how balls-to-the wall this build is. I am curious how much daily usability you intend to retain? There are a ton of things you could probably do if you give up passenger car functions. How far are you planning to go?
Either way I love the experimental nature to it. I wonder if there are some old-school methods of racecar engineering you could apply to generate some actual testing data. Like how much downforce is being generated in the back by monitoring ride height change at speed, etc.
I really should read up more about racecar development.