If you smoke 'em its 2.5 hours or so. In the oven 1.5 with another 10 min on broil to make the weave crispy. Although my fatties weren't as large.
I smoked it, and it was probably on for 4 hours or so at ~225. But as my good friend Smokin Gator says, the good thing about messing up is you get to eat the mistakes. Tweren't a bad mistake, either.