If you are doing it for work and are camping in the rough (not a campground), I'd be sure to add an outside shower. Being a bigger person, I fugging hate every camper shower I've ever been in.
And yeah, finding a camper mounted grill/griddle setup would be a great idea. I have one and it's worth it to permanently mount a bracket right outside the door. Talk to a local camper store about some examples for what will suit you best.
Go to Walmart and get yourself a 10x10 ft (or greater) outside carpet for in front of the door. They fold up great and beat the holy hell out of dealing with mud at the front door. Also, pick up one of those stackable plastic, lego-like leveling kits. They are awesome!
Again, if you are roughing it, consider a solar panel to help keep the battery topped off. I'm pretty sure that running a fridge on propane requires electricity for the thermostat. There's always some vampire draw on your battery when roughing it. You should be able to charge your battery by plugging it into the pickup and letting the pickup run, but that's an expensive and noisy way to charge a battery.