Hello,
Awesome write up.
Hopefully this hasn't been mentioned before, but with that type of power at your wheels - could I suggest that maybe attention is turned to your clutch and CMS?
I had a catastrophic CMS failure that literally 'exploded' putting fluid all over the clutch/flywheel/pressure plate............completely ruined.
Had it all replaced but also with a strengthened CMS. Perhaps you can get an aftermarket kit etc and keep the stock as a spare.
Just saying.
Regards