Hello :welcome1: and congratulations
Our longest trip that we have been on was one year and in that time we covered just half of Europe. When you have a big plan like yours you have the choice from either doing everything in a set time and end up just ticking of the places you have been or. seeing everything and not getting much farther than the garden gate (relatively speaking). It is easy to find yourself just skimming over places and by doing so you will miss so much. On the other hand it is also easy to get castled out, ruined out, or even beached out (I think).
Anyway my advice would be to keep the plan flexible and not book too much ahead, if anything. If your expectations are low then you will be pleased more times than disappointed, and don't forget motorhoming is about the journey not the destination!
Spinner