Dang, I'm jealous!
I've never had a new car, let alone a monster like yours. Other than aesthetic, what are the differences between the BMW/Supra, and how/why did you go with the Toyota version?
As for break-in...i know many recommend babying it, but the metal pieces that are gonna come off are gonna come off one way or another, right? It'll eventually get hot, see redline, etc... so you're just getting all the metal-metal polished early as I see it. Unless the mfg actually fills it with a different (thicker?) break-in oil, i suppose? Do they do that? But I've never owned a new engine, so who knows what I'd actually do if it were my car!