Good Morning…I’ll be starting the Frances route from Pamplona beginning Sept 11. I’m planning on 45 days to arrive in Santiago. I’ll be using a luggage transfer service but will be carrying a day pack. I’m trying to figure out what i need to carry each day. Thinking I won’t need my fleece or puffy jacket early on but as the weather turns to fall will need those items. I’m looking for suggestions for what must be included in the pack and what size backpack makes the most sense. I have a 22 liter backpack but when it has the warmer items in it is is quite full and I’m concerned I won’t have room for lunch/snacks. Thanks for your thoughts