OK, after extensive testing, I think I got the script to do exactly what I want. I'm going to let it run a few days before announcing it to make sure it works, though, hahaha.
Currently exploding trying to make a PHP script to run as a cron job every day that automatically generates an RSS feed based on new images uploaded into a directory (so you can get image updates from the site, not my Toyhouse). It's mostly done I just have to add in a failsafe for when there's no new images....
Lun instantly found a bug OTL