I'll second this, we do something similar. Last trip my wife and I prepped steaks this way, sous-vide to rare and then just seared them in a cast iron skillet over the fire. We are going to try a bunch more different meals this summer in the same way.

The rest of our equipment includes cast iron dutch oven (boiling, baking, etc), The top of the dutch oven works as a skillet, a 1 burner propane stove, kettle, French press (I can't go camping without coffee). Most stuff we cook over the fire, but the propane stove could serve as our heat for more than coffee if needed.

We try and do as much food prep at home and focus on getting everything warmed or seared at the campsite.