I have that same unit and really like it. Seems most of our trips we have electric now, but it still gets used once in a while. Has held up good so far. How about another one like that and a large thermos to keep it warm?
Also, to keep mine warm, I use some gadget that I had (not sure what it is called), it is basically like a round metal hotplate with a wooden handle. I put that over the burner and then put the glass carafe on it. that way the glass isn't directly over the flame. It has worked good for us. I will see if I can find what that thing is called that I put between the burner and the carafe.
2016 Flagstaff 23LB