Eco-lite, maybe I misread your intent. I inferred you were going off the grid by packing in to some remote area for some indefinate time. If you are just leaving home with a mix of travel, cafes and camping, that is a whole different scenario. By all means enjoy yourself. As to equipment, sounds like you are trying out all the options beforehand. Many do just as you are planning. I recently gave a ride to a gentleman who hikes clear across the country and back and has been doing it for years. I didn't ask him all the details but since he asked to stop at a store to replenish his supplies, I assumed he either carried a large sum of cash (dangerous) or had his income auto deposited and used a debit card.
Good luck with your travels.