Got pretty much the same set up and just been checking the big tall thin campingaz fits the stone and the lamp as the propane butane mix is like 6 or 7 pound unless on sale but for the tall slim gas for a blowtorch its only £4 from tool station but there is a video I seen with the adapter to refill them canisters from a calor gas bottle so I am going to try and order the fitting for cheap refills as I use 2 or 3 every time I go away for a few days. Not so much in the summer but definitely that much gas in the winter with dark nights and windy wet days cooking. Hope you enjoy. The stand is not really needed on flat hard ground but on grass or muddy floor it foes work wonders and is stable enough once you put the pan on top.
