I've been using the WP Scheduled Posts plugin for over five years. It used to be great but now it's full of bugs and needs more work. I can't even set different schedules for different days anymore because it crashes WordPress and makes my site inaccessible without an update. I tried other schedule plugins (not mentioning names) but they are free and way better than WP Scheduled Posts. A very complicated plugin for me. I hope it will improve by time.