Dan, you will have plenty of food I wouldn't get anymore. Your briskets will shrink considerably but with everything else you shoudl be fine. Your plan sounds good although I have never tried to finish off a brisket after it's been cooked to a certain temp. The problem with that cut of meat is it dries out really fast so you might want to be careful. i would say cook the thing all the way through then reheat it the next day if you have to.
Blue Moon Porkers
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