Moreover my problem is not having the time to investigate alternate hosting; my current alternate host has been treating one of my friends on the same plan as me quite poorly and I don't know of any other good hosts that would be affordable. I've been considering taking backups of the servers and just cancelling them and piecing things back together as I have time, but I hadn't because this at least had the advantage that things would keep running.
@announce Might masto.host be an option, either as a stopgap or permanently? Cheap, and outstanding service. They might well be able to import everything, keeping your load down to just the billing.