Hmmm, looking at the cost of large SSDs, I think you're right that I should downgrade my storage requirements. Or perhaps I could use a large HDD that is turned off while underway for "long-term" storage and a smaller SSD for media that I want immediately available. That would avoid the problem of spinning a HDD while bouncing around in high wind and waves.
And, yes, we do have books, lol. But we also enjoy movies. :)