Hey Garrison, I'm in the beginning phase of a tiny trailer house and am looking at exactly the same options as yourself. Currently leaning towards the Hobbit stove but would love a more permaculture solution if there was one. Tiny trailer houses, by their portable, lightweight "massless" and low-R natures, don't seem to hold heat well.
What did the gypsies with the vardos do for heat?
Looking forward to answers to the questions you posed...!