The Lang is a not a wise choice for vending. Sort of a fuel hog. Plus you have to deal with regulating temps. My suggestion would be to sell the medium spicewine and buy a larger one. Catering is a business and you need to have more of a set it and forget it mentality.
"Grilla in the Pits" "IMAGRILLA"
There's plenty of room for all of God's creatures.
Right next to the mashed potatoes.
Brinkmann Model 6668 Gasser
Stumps GF223 w/ Stoker assist
ECB that wins the $
Weber One-Touch Gold 22-1/2"
Large BGE w/ Stoker assist
55 gallon Drum Smoker
Wood Crate Cold smoker w/ smoke injector
No need for certification, I already know good BBQ!