Picked up a Cres Cor warming cabinet and converting it to a sausage smoker. It still works, the only thing I need to do is cut a hole for a vent in the top. Is it advisable to have a stack, or would a simple round vent such as this work ok? All i'm looking to do is keep a pellet maze lit and smoke sausage, highest temps around 175. I have a Yoder for smoking anything at higher temps, so this will be strictly a sausage smoking/jerky smoking/holding cabinet.