Thanks for the input, all good to know.
I chose propane for several reasons - first, propane stove components, such as burners, are available for making custom stoves. Second, because propane is available everywhere, tanks are available in several sizes (including throwaway cans for torches in hardware stores) and it fires up easily and works well. But other fuels have good attributes as well as you point out. For the past several years I've been using a small butane stove and it's worked great.
I'm going to build this one as a proof-of-concept prototype and go from there based on what I learn from the prototype. I've got a tentative design for a dual burner stove that attaches in the same place so if the single burner works out well maybe I'll also do a two burner version.
I am interested in exploring different ways to carry propane. As I mentioned in my post, for the amount of cooking I do a 1 lb. disposable propane can from the hardware store is probably good enough, but others who are more serious about cooking will need more. Here's a photo I stole from Donny's instagram, he's got a 5 lb. tank mounted on his Ursa Minor top (he made me drill the holes to mount it
), it looks like he's fueling both a tabletop stove and his Tembo Tusk from the one tank. Not sure everyone wants to drill holes in their hardtop though, so I'm going to see what other options there are for carrying a 5 lb. tank and what new options I can come up with.