We have the Waeco in our swan, will last a few days on the 2 x N70Z batteries in the camper, and also have a 120W panel that keeps it all topped up.
Also have the slideout BBQ, suited us better as it is one less thing that has to be packed so that it doesn't move about and maybe scratch stuff inside.. I built in around it and this gives another small shelf obove it(accessed from inside under the lounge) to put small items out of the way, like the kids toiletries etc. We also got rid of the wardrobe altogether, this is our 3rd jayco, 1 hawk, 2 swans, we decided that the wardrobe would be a PITA to put up and down all the time, as we tend to only stay a few days and move on during longer road trips.
Also have the HWS, and dont really need both gas cylinders. Can't remember how long one lasts, but it is ages, as the HWS holds its heat for a long time, so does not cycle very often
Had aTrigg on the last one, went with an AT35 this time, i find it easier to hook up by myself(wife is usually busy with the kids)
Cheers
Red