In the end do what you feel is right for you and the level warmth needed and the level of risk assumed. I run a little buddy at bed and in the morning. My choice is to have warm enough sleeping material that I will not need a heater at night. I sleep on the ground and usually have two dogs...
"Chipping" does nothing but fool the ecu into dumping more fuel. There is a company that does a bench tune for the ecoDiesel. The Bosch controller is very locked down. A proper tune actually changes the fuel maps.
The ecoDiesel is not available at the moment from a dealer. The ecoBoost creates a lot of power. the new engine now uses port injection primarily do to intake valve coking.
The GPS in my truck's Nav unit sucks. I use my iPad (when off-road) or iPhone for normal driving. I also have a Delorme InReach. I use the iPad and Gaia to track my route, and paper maps to figure out where I am. Modern GPS units are usually very accurate.
Part of the reason I bring "real" food, is I have certain food restrictions. I cannot have Wheat or Barley. I am mostly dairy free, but Lactaid takes care of me on the occasion I do have dairy. I also like to cook and prefer freshly prepared meals. I will sometimes supplement with quality...