Originally Posted by Fire Me Boy!
Not sure, man. Honestly, I've never seen turkey that big. The brine will help, certainly. I'd be afraid the outside of the breast will be dry and chalky by the time the inside is up to temp.
Definitely don't stuff it, you'll want as much heat contact on the inside as you can get. And I would think low and slow would be the key, but I really don't have any idea how to attack a bird that big.
I do big birds most years. They cook faster when brined. I don't stuff 'em but I do put aromatics in there.
Cook 'em breast side down for the first hour, then turn 'em over and baste with stock every 45 minutes or so. Foil tent when the skin is browned. Take out when it hits 165 and let it settle under foil before cutting.
Damn now I'm hungry.