Reading the pdf, I see that from Pamplona, once one gets to Salvatierra clear through Vitoria-Gasteiz or Miranda de Ebro, the way follows the Vasco/Via de Bayona. Which makes things easy: it's both well-marked and well-serviced. After that comes the 'interesting' part.
@Stivandrer, if you are stlll interested, I just finished a virtual camino along this route - finding some alternatives with the collusion of some other helpful trouble-makers. I mostly used wikiloc tracks from @caminka, who walked this way in 2012, but there are links to a few others in the early stages.
It looks like an amazing camino.
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