Ran a 5lb der (1.2gal) for a year, will run a fireplace for 6 hrs on full (all on my instagram Ruff_me-and_jeep_cherokee) . Carry a splitter to run a Buddy heater (bulk whip) and the fireplace. Using a butane single burner so no propane there. If I bring my Skottle I use a small bottle but can also run it from the bulk adapter. Just mounted a 11lb. tank (2.7gal) same size as a 5lb but taller. That being said always bring a small bottle as I bring a torch tip....
The bulk tank towers work great for a lantern/stove combo.
The Bulk Refill adapter I had did not work with the small fat bottles as they hit the side of the tank, and only fill the small long narrow tank half at best.
Always good to have a small bottle, torch tip and soldier is nice to have.
Amazon,
5lb- $50
11lb- $47 (yeah cheaper)
bulk whip $18
Towers, $25-30?
Bulk filler $18, not availible in Calif.
Made my own tank carry mount, just put in the Kitchen Thread