You might want to wait to spec your Boxster.

RC mentioned that the standard 987 will be getting 250hp engines this summer. That, sport chrono and the 5spd will be very entertaining.

Avoid the PASM, you dont really gain anything with it.If you plan to keep the car past warranty, failure of just one of the PASM shocks will give a parts price heart acttack. If you end up wanting a performance suspension, its way cheaper to alter the standard suspension.