I'll offer this for thought, qualified first by saying I don't know what your intended usage is (fast track day, auto-x, full race, etc). Nonetheless,
A common mistake is over-tire-ing a car that weighs this little. Very often, ultimate grip is better with a slightly smaller contact patch that heats up to and stabilizes at a more appropriate temperature. Requires lot$ of testing of lot$ of tires, but thats part of the fun, right...?