Yum! Will you shred it and use it in sandwiches?
First time around, I would slice it and eat it with sides, such as coleslaw or baked beans. Next I would have it as sandwiches. I have only made a couple briskets in my life. I do know they need to be cooked for a long time and on a little lower heat when you do one in the oven. I have cooked many roasts at 325 degrees and they turn out very tender.
I'm curious about how much brisket runs a pound where you live? I looked at brisket more than a month ago at Costco and a 15 pound brisket was around $56, so around $3.70 a pound. It was too big and too much for me. I could have cut it up into smaller portions and put it in the freezer, but the freezer is full.