The LJ crossposting seems to be working quite acceptably so far. The import function is a little squirrley at the moment, and I’m not sure if it’s just domain lag or something is actually wrong, as categories are updating instantly, but the posts on the backside are not - so I think it would be best if I stop attempting to import and tag things until I figure out what’s going on.
But - overall, not a bad migration so far.