How should I negotiate equity?

Hey sales savages!

I am contemplating joining a series C start up ($10M ARR with a target of $30M ARR this FY). Next FY they're targeting $30M to $90M. Mostly PLG, this would be a founding AE role reporting into an RVP amongst 2 other AEs.

Given the above information, what would be a feasible negotiation strategy and what should I expect from a company at this stage in terms of equity?

At my current company, I received a total of 3,500 shares when they were at $30M ARR that increased to 7,500 over two promotions with a 1-year cliff and 3-year schedule.

Any advice would be hugely appreciated here, thank you!