I guess it really depends on how may you need to feed.
If you need to stretch your $20 and 4 pounds of meat I wouldn't
go with BBQ. Pasta Bolognese will give you a big bang for the buck
and feed a hungry group.
If your plan is to smoke your meal I agree with the already suggested meatloaf and chicken.
Lang 84 Deluxe Warmer with Chargrill
XL - BGE
Med. BGE ( Bought it for my son Vincenzo)
Kenmore Elite Gasser
Camp Chef Outdoor Stove