Long distances are not about the bike, it's all about getting a decent feed IMO. I always found that to be the most important thing. Once you've had a good tuck-in details like somewhere to camp become less pressing.
Getting your eating arrangements sorted makes doing big mileages easy.
When I was young I had very little money but used to go off for a week at a time - I could come home with change from 10 bob.
I preferred to avoid towns so the only time I would look for a cafe was in the morning.
I used to use 2 Thermos flasks. One full of hot food, and the other hot water. When I stopped I made myself some tea right away and ate without having to wait for cooking. While I was eating, the next batch of water was getting boiled and also the next meal to go in the Thermoses. BTW cheap canned stew tastes really good after about 3 hours in the flask - mix in some oats or powdered spud and it's even better.
I usually slept under something with a bit of shelter sooner than unpack the tent unless it was raining.
Breakfast was just a cup of tea and the remains of yesterday's loaf, the idea being to get riding asap to get the chill out of my bones. If I was feeling flush, I'd stop at the first transport cafe for for a proper cyclist's breakfast of eggs, bacon and lashing of tea. I'd pour some of their milk into my little bottle for later use, and use the bog to get myself and eating gear clean. Otherwise I'd just stop and make some porridge and tea.
Shopping was done just before lunch. Whatever tinned food I bought was emptied into the thermos so I didn't have to cart the tin around - it was binned right away. If I could get a loaf of French bread, that would get tied to the bars and eaten on the move (it's not such a great idea when it rains ), otherwise an ordinary crusty loaf with several of the slices in a handy pocket.
As user-removed said - it is very freeing to travel like this.