It's always best practice to vary posting times. Mostly what they look for is a footprint. That is, computer like precision in this case. Set a timer that will vary your posting time, "post between x and x time"
Used properly, the campaign function in MP works (sort of) like Edgar, except it doesn't analyze your engagement with a particular post, and "automatically recycle it".
You can set your posts to be re-added in a campaign, and then manually sort through once a day/week, whatever, to delete poorly performing posts.
This is handy in Twitter campaigns, I am sure it would be handy for FB.