DMing for the first time: how many players do you think I could handle before feeling overwhelmed with responsibility?

I don’t know if you typically answer D&D questions online but I needed to ask, for someone who’s DMing for the first time (and has only played a few sessions beforehand), how many players do you think I could handle before feeling overwhelmed with responsibility? I generally recommend 3-6 players for most tables. More can be done, but that “overwhelmed” feeling grows exponentially beyond that

— Matthew Mercer (@matthewmercer) January 15, 2018