I was wrong, no 12v plugs at the back (my brain, before coffee, was remembering the stupid useless headphone jacks back there). The one near the TV doesn't work without the engine running.
So back to the drawing board. I'm leaning towards Bobs recommendation, house battery with continuous duty solenoid. There is a pick-a-part place here in town I want to visit to see if they have the mounting tray for this model, it's hard for me to locate it on the net.
And, as for the laptop, and reading the reply's, I may just leave it home and take my iPad for internet off free Wifi places when needed. I have a small portable dvd player, whopping 7" (don't be jealous! lol) that I can charge up for a movie if needed. The iPad has Kindle and I have Kindle Unlimited to download a lot of books. The iPad's battery lasts surprisingly a long time. Might take a few real books with me, as well.
For lighting, so far have 4 LED puck lights that are battery powered. Gonna test them out to see if they will suffice before I get into trying to change out lighting in there. If they work well enough I may look into one of those small solar charges I can put on the dash and battery charger to keep them going without going through a ton of batteries.
Thank you all for the info, you guys are great!!!