I know quite a few people who bot with 0/0/0 accounts from day 1. The trick is to get at least some kind of profit and then it's just a matter of scaling - this won't be possible without HQ proxies(only private-personal 4g worked for me) and ofc accounts themselves must be good quality too. With churn n burn method like this you can easily go through tens of thousands of accounts per week.
Some people do likes, some follows, some DMs, some view stories, some do mentions, others manage to do few actions at once. Long story short - you can't be sure what will work for you and those 500 accounts until you get your hands dirty and test test test.