Hi, Andy.
If you have problems with your back, may be it's a good idea the Camino Portugues. You have albergues each 13 km, not crowded, where you can arrive late and you will find a bed to rest. In the Camino Frances it's difficult to find a bed arriving in the afternoon.
If you understand spanish or portuguese, remember than you can download the whole guide of the Camino Portugues in
http://www.amigosdelcamino.com completely free.
By the other side, it's curious this photo with too many problems to get a bed in O Pino, where the Camino it's been destroyed to build a industrial Polygon.
Andy, have a very good Camino.
Javier Martin
Madrid, Spain.