No worries getting lost. Very straightforward and well marked. I completed the Via Francigena this past October with no issues. I went over the pass in early September. It's an amazing section of the Via Francigena. Have you checked out the Pilgrims to Rome website? It is a great source of...
Sounds like you're looking ahead and doing the same thing. I've still got hopes that I'm going to complete my pilgrimage but I sure don't want to be left unprepared.
Best of luck with your planning.