Thanks very much for your thoughts, Jayhovah. So there IS an engine oil cooler somewhere? Where the heck is it?!
Just for the sake of linking, I found this DIY:
z1 oil cooler installation w/ pics On page 3, Z1 provides a pdf to their updated instructions.
In my case, not only would I have to budget for a 34-row, but also a rolling jack stand, and two stationary stands, as I imagine you can't do the install with the tires on the floor. (Required removal of the undershroud?) Alternatively, I suppose I could get ramps from Harbor Freight, but they probably wouldn't clear the underside of the bumper before reaching the tires.
I like the "wait and see" acid test, but I don't relish the idea of having to dig back into the front of the car a second time if it does run too hot to put the cooler on.
I will never dump the clutch, because I know how hard that is on various drivetrain components, and I hate breaking things. Most likely, the s/c will only ever see full boost for short rolling acceleration runs lasting no longer than a minute, and quick blips on the throttle of a few seconds each. I've had the car up to 110 already, and it reaches that speed so quickly I can't imagine holding the pedal to the floor that long very often with the s/c -- I'd be hitting 160!
(BTW, I just got my Uniden R3 in the mail...)