Hi nlew, you have very little to worry about. There is enough albergues open in November, so you will not have to camp. The longest I had to walk to get a open hostel was Logrono to Najera, the one in Ventoasa was shut, it may have been possible to stay in Naverette but i did not check.
There is a very intimate feel to walking at that time of year, there is usually a small group of you walking, around 30 of us set of from the SJPDP at the same time and more or less the same people bumped into each other at the morning mass in Santiago on the day of arrival then we went out as big group for a meal that night. We did our own thing in between, all taking turns to walk with each other, dropping back or surging ahead depending on what you felt like.
What has been suggested of taking layers is the best option. I did that and it worked for me. The only thing I would change is that I took technical winter walking trousers and autumn type walking trousers,next time I would have the latter be able to double up as shorts(with the zip offs), it got very warm some days(towards the end of November) and the option of just wearing shorts and T-shirt would have been nice.
Mike