On some of our earlier trips, we used to plan out the meals and Kerry used to freeze up individual meals etc.
Kerry now makes sure our pantry has spices, dry herbs, rice, pasta, tinned veggies, sauces...and some good camping recipes you know you can do easily.......and we adapt as we go....
You never know how your day will turn out...long drive, hot day, quick lunch stop,instead of long.... and from what Mark has said and others on the GRR Facebook page, access to grocery shops isn't that hard....
We over planned our food.....if you are concerned about access to greens, then just take some supplements with you in case.....
So keep it simple and easy and don't over think it...
Mark & Kerry