Here is very rough and quick mockup of the kitchen with "new to me" hydroflame furnace, 3-way fridge, sink and to-be-changed cooktop( from 3 to 2 burner for more space). The furnace seems to be very solidly built, it uses heavy gauge metal for combustion chamber. I like the chrome grill, will need to clean and buff it though, but it is in a good shape. The fridge face yellow panel is easy replaceable and could be changed to match color/texture theme in the trailer(still working on it ). There will be drawers above the furnace and grocery drawer under fridge. Sink cabinet will have a door. There will be two portable containers under the sink - one for fresh water and other is for grey water. I will do some plumbing to allow for direct drain to ground or outside container for the places that allow that. There will be some shelf under the sink as well. See some pictures with this mockup below, the face frame will require some more modifications to much this furnace and overall arrangement, but I am getting closer to finalize the kitchen..
The furnace model is HYDRO FLAME BRC-10A and I found installation manual online that I will follow -http://www.winds.ca/1980Vandura/images/Hydro%20Flame%20BRC-10.pdf
Apparently I can add a fan to make it work more efficiently.. I am thinking of homemade electronic fan controls to precisely control inside room temperature with it, but that is when I get my electronic thermostat controls in mail and get some computer fan to do some experiments.