Just installed an 8200 in my R8 along with a Maestro to retain steering wheel controls, parking sensors, etc.  Thing is, the unit takes so long to boot up (~30 seconds plus having to hit OK to the disclaimer message) that the parking sensors and reverse cam are pretty much useless.  Hard to believe their flagship head unit would take so damn long to boot! Any advice?

NVM, I hadn't installed the reverse cam when I posted, just had the parking sensors.  With the reverse cam installed, it trumps everything as soon as I put it in reverse.