Have you done the maths on solar charging the battery? I could easily see whatever power generated by the panels being used by the battery. And you still being short.
Are you planning on charging the battery directly from the solar panels or using a pass through or other battery?
Have you considered what will happen in poor weather?
I've seen (online) a handful of rigs as you describe, but it's pretty niche and I imagine most on here won't have much direct experience.
If you are planning to live this way as opposed to going on a tour of whatever length it's more complicated again.
It would probably be best to try and build a system ar home where you can test out different ideas. A hub dynamo, for instance, for charging other electronics.