Hi there,
A few days ago I posted about Google proxies, Google Proxies for Instagram , and with them our client built a crazy setup. 
He is currently running 50 instances of Chrome with 10 proxies from Google, he is doing the automation with a chrome extension, that we customized for him, and all other actions manually from the browser, he does a blend of manual and automatic actions every day.
He never runs actions at night, and he only uses the accounts in chrome, never in IG app.
He is posting from the browser but soon he will move to FB as he already linked all the accounts. (in order to schedule all posts)
What do you think about the setup? Have you tried it?