More driver tuition - yes.
100cell cats, remap - all good for an extra 15bhp on CSL.
Lighter Recaro seats - yes and maybe removal of 18kg in the rear. Total weight saved - 30kg IMO.
Go on a diet and lose 10kg or more - yes.
Some more camber on the front and Brembo BBK.
That's all i'd do. I wouldn't even do the suspension change.
Good luck.
