Actually, that's totally what I would do. Have your coder (you?) finish his work on the new neinchan codebase, take the extra time to find somewhere offshore where they don't give a fuck about SJW bullshit. When you have it in place, keep backups. Fuck, you could rsync it to google drive, and so long as you didn't publicize it, your backup would be safe.
Depending on how much extra code you want to do, you could do a tineye search on the pics, pull URLs for them, and you wouldn't even need to store most of the images.