Social Media Scheduling

Hey all. I'm trying to set up a schedule for posting on social media. I'm starting with Facebook, Instagram and Twitter, but even limited to those three it seems a daunting task. I'd like to have a system so I don't have to think too hard. Something like, marketing on Mondays, photography on Fridays, something funny on Sundays, etc.

Anyone organize their social media content this way? Any advice? Not every post needs to market my business, so long as my twitter feed isn't a ghost town.