Please don't use any real-time chat as the main community channel. Use a discussion forum instead. FOSS projects last many years while rarely needing real-time collaboration -- using a "slower", more focused and more searchable communication platform makes better sense.

Also, and this is very subjective, from my experience real-time chat (Discord especially) allows toxic community members to be toxic without much fear of punishment since the interactions are ephemeral. Moreover, toxic people often lurk the channels 24/7 and thus are the first to respond to questions. Questions that happen to be "stupid" since the same question is asked often -- even though the last instance has already been drowned out by a half-kilometre of memes and off-topic talk.