First Brisket/Cash Cow only?

Doing my first Brisket tomorrow night and as the title suggests should i just use Cash Cow or a combination of rubs?
I have pretty much all the other BPS rubs. I am going to inject with beef broth, or should i add something to the beef broth as well? Also going to wrap in butcher paper. I think I am going to put it on the pit at about 10pm and let her go overnight. I kind of have to do that because I only have a Davy Crockett and am also doing pig shots and Smoked mac and cheese so I need to get the brisket off and in a cooler for a couple hours while those items cook.
Thanks for any pointers, this is my first brisket and pig shots.

I have used just Cash Cow, and I have also added Montreal Steak Seasoning. Both have turned out fine.

Thanks NorCal. I went with cash Cow Montreal steak combo. I ended up not injecting. Figured for my first one I should keep it kind of simple.

double secret or little louies with the cash cow next time also Simply Marvelous peppered cow is great with those

Thanks Big poppa. I'll try those combos next time.

Cattle Prod injection is my go to brisket injection now! Absolutely love the stuff for getting flavor deep and moisture retention.