I just finished vacuum sealing the brisket I cooked today. It will keep just fine in the freezer until I'm ready to serve it.
For storing bbq more than a day or two, I think a vacuum sealer is one of those "must have" tools of the trade. The vacuum sealer will keep things fresh and storage is a breeze.
When it's time to serve the 'que, I'll thaw it and reheat it in the microwave or in a crock pot.