Replace the IMS bearing with the upgrade kit ASAP. And as long as you're in there, replace the clutch and RMS.
Get 8 restful hours of sleep, and then drive the car with wild abandon and full confidence that you've conducted the correct preventative procedure.
And it will save you a lot of time and "Boxster-angst" reading and fretting about all the IMS posts on the forums!
But that's only me, and I'm just sayin'...............
TO