Im a conveyor oven guy so I don’t know a whole lot about deck ovens but 50,000 BTU’s seems awful low. I have a feeling that you’ll have very slow recovery times on you busy nights.
It sounds like what you are looking at is a “bakery” oven. They are made by many of the same manufacturers of pizza ovens, they look just like a “pizza” oven but what distinguishes them from the pizza counterpart is the lower BTU burner. Many of these ovens also have a steel deck which is usually a dead give away.
Tom Lehmann/The Dough Doctor