All the weights on the trailer do not include propane tanks and house battery, or the WDH equipment... nor any of the stuff you have packed into the trailer, so there is no way for anyone here to tell you your hitch weight.
It is likely that your actual hitch weight will be close to 15% of the wet weight of the trailer, packed and ready to camp. My guess is you can bank on at least 600-650lbs, but maybe more.
Generally, the three holding tanks will (and should) have some liquid in them. The grey and black tanks on TTs are usually behind the axles, so adding weight to those actually reduces your hitch weight if this is the layout of your trailer.
And while keeping liquid in the tanks ads weight to the trailer, it also lowers the center of gravity and makes the trailer more stable.
2013 Winnebago 2301BH-Red
2012 Ram 2500 Megacab HO CTD