Can anyone give me a definitive answer about what is included in the weight of the 'van before you start loading all your other stuff? This will be our first winter away, when we bought the van it had solar panels, satellite dish, bike rack and reversing camera added as extras by the previous owners. It also has a full oven/grill/hob, now some books say this is classed as an 'extra' also. Help! Should we also include the weight of the water and gas bottles? and what about a tank of fuel? I'm very confused and can't start deciding what to take and not to take until I know how much payload I have left from the maximum. Thanks, Sue.