@fgtech @joejenett I figure the time to experiment for me is now since I have a new WP install with very little content. I've been hesitating on some new projects because I didn't trust WordPress's direction. If this plugin that converts Wordpress to ClassicPress works then it is the solution to that problem.
The site I'm thinking of converting, currently has all the Indieweb plugins installed but they are untested. I'm told the theme maybe/sorta works with Indieweb. Anyway, while it would be nice to have Indieweb things working, it is an extra, not a core requirement in my mind. So if they don't work I can live with that.
I'm going to do a little more investigation on this conversion stuff before I try.