FR26 - Where next?

When we leave here we have two days to get to the next campsite at Quiberon. 

The initial plan in my head was one night at Mont St Michel, either at the official car parking for the buses to the Mont, or at the Camping-Car Park aire in Beauvoir.

The cost of the parking seemed a bit pricey. There are no services at all and its €25 a night.

The CCP aire is a little cheaper at €18 with all the services including EHU, but a 5kms walk to the Mont.

We  have been before so then maybe we will give it a miss this time and do the CCP.

Where after that? I have pencilled in Josselin in Brittany. There's a Camping-Car Park aire there and a huge castle.