In your shoes, I'd to the first feeler out there almost stock. By stock I mean, make sure you do all the essentials, that even the owners manual recommends. That would be fresh Dot 4, and rear diff fluid that is good to go.
I would also do two more things before your first outing, and that is an alignment, and to flush and refill with 65-70% distilled water, 1 bottle Redline waterwetter, and OEM coolant in the rad.
That's what I would do for the first higher speed, road course outing. Then I'd adjust accordingly, think of it as tailoring your suit.
Wear it first