Thanks! I went ahead with microdata and opengraph the other evening (it
was already something I was using on pixls, so it wasn't too alien for
me). It seems to be ok, though I'll probably come back and consider
something like JSON-LD later on. I didn't completely implement across
entire pages
You can definitely mix and match microdata formats without causing any
issues, unless maybe you accidentally put conflicting information
between the different formats. Changes to metadata in one format will
need to be updated in all other formats. Shouldn't be too hard to keep
straight.