Hello Ray,
Thank you for your comprehensive reply, we do have plenty of time to do the route, and intend to spend time in Pamploma, Longrono, Salamanca, Avila, Toledo, Madrid, Valencia, Tarragona then we will visit our nephew in Mataro north of Barcelona. We normally spend 2-3-4 nights in each place, depending on how large the place is and what it has to offer. However I may have to revise the plans, due to you pointing out the additional charges for only spending a few days. I will use ACSI and would hope that the price will stand even for an overnight stop.
We used the Toll Roads in Italy and felt that the cost was reasonable and justified by the time saved and probable better mpg. In France over the years we have found that as we have the time, it is better and more interesting to use the minor roads. I do have the Garmin Camper Sat Nav which I think will prove very useful for our first visit to Spain, as it has our vans details built in to it. We have a Swift 565 which is 7.25metres long so need sites that will accept a mid length van.
Your reply has given me a lot more confidence to visit Spain and has allayed most of my fears about the trip.
Many thanks and best regards,
George