Brisket Chili Question

I have a question for all of you chili lovers out there.

We have a chili competition coming up at work. I am planning on making my O.G. chili but adding smoked brisket to it just to step the game up a little.

My question is should I still use hamburger as well? Or just omit the hamburger? If I omit the hamburger would it be worthwhile to add bacon as well as the brisket?