My experience with the ovens has been poor when using in a kitchen. I didnt do it with this brand but they usually burn or had poor temp control and never lasted very long.
I Love dutch ovens. Very easy. If you don't want to use coals many things can be done on the burner but lid gets cold so you have to pull and reheat often for longer cooks. I have an oven in the trailer and carry one of these anyway.
I did turkeys in cardboard boxes lined with foil for scout thanksgiving cookout. If you use pie tins for the coals and bricks or soda cans with sand to hold the grates you just swap coals every 30-45min. Way better than hauling around another big appliance. I just cut a small slot on bottom of the box to access coals.
Doesn't your rig have an oven?
I have also used turkey ovens. These are cheap ($30) and can cook a lot more than turkey. It really depends on what you want to cook amd what you are willing to store for the money to me.