Got it. Since everyone's goals are different, in 35 years of touring, I have not heard of a program that exists. Basically, you will need to buy the individual map segments you need, review them, make a rough draft of your itinerary to see where you can be each day based on your individual needs. There are way to many variable to do a realistic program. For instance, you may need a motel and/or restaurant at the end of your daily goal but only a campground exists. Therefore, you will need to decide what is best for you, cutting the daily distance or going longer. If it is very hilly, you may choose shorter. If flat and you have a tailwind, go longer. But you need to visit Aunt Sally who lives 20 miles off route also. This is why a program doesn't work.
Realize, no plan will survive a few days it seems so just be familiar with what you can do and what you want to do.
Again, best wishes!