I am planning to do the rear upgrade in the future too and would like to end up with the si combo setup. Also 286 to 300 is just 14mm. Not 25 like in your case
. Another reason is I am thinking of an ESS supercharger that will bring me to about the same power as the 3,0si (270-280hp).
If you ask why not wait for after the ESS is that I need new rotors up front now.

If you ask why not wait for after the ESS is that I need new rotors up front now.