I bought a whole (10+ lb) brisket to make for a bbq but it is too big to cook on my bbq over indirect heat. I can either fit in in my oven, which is what I think I should probably do, or cook it over direct heat on the grill, which I think will burn it. My husband really wants to serve bbq brisket sandwiches at our bbq. Can someone please give me advice/instructions on what I should do. Thanks!