I am always surprised with the amount of knowledge on this forum... Thank you for all the input.
1. If the truck cannot keep the battery fully charged while the 12v fridge is running I would consider that serious design flaw on the behalf of Lance. Why included a 12v option if it is not efficient enough to use it? Thus far I agree though if the fridge is cold when I unplug it will stay cold for hours. I will see how that works out this summertime. But for now no more 12v fridge.
2. For me at least not running the furnace at night is not an option. I have a cold wife and the of the main reasons for the TC was to keep her happy. The wave heater, etc are great ideas but Personally I don't want more stuff and I think if you buy a TC with a heater it should be efficient enough it make it through a couple of nights.
3. I should keep the truck running until we are all set up. I didn't really need all 4 jacks. I don't know why I put them all down. I carry a Honda 2000 but I never want to be the guy using it. I find it so annoying when someone in a camp ground is running their genny. I don't know that the cold would affect the battery too much as the battery is located inside the camper so in theory the battery should be a little warmer than the outside temp I think. Solar I don't think would be any use to me as I am in the PNW and usually under some kind of tree cover anyways.
4. The best solution for my situation for now taking everyones comments into consideration I think is going to be to add a second battery and replace the original one this a sealed battery as well. The 865 battery compartment is actually fairly large so two sealed batteries should fit. If I am using sealed batteries it does not have to vent correct?
When it comes to Truck Camping I have been developing a philosophy of use that I think everything should work properly to my needs without a lot of extra effort. So my goal would be to get the TC dialed in to where all the system work flawless to my needs. I want to be able to spend two nights dry camping in the winter, using power conservatively but being very comfortable without having to result to external power sources. I guess we will see if that can be accomplished.