Structure: the choices that matter
Two settings define the whole event: starting stack measured in big blinds, and how long each level lasts. Deep stacks with long levels produce a skilful, slow game; shallow stacks with fast levels produce a quick, luck-heavy one. Neither is wrong — but decide which you are building.
Estimate total duration before publishing. A group that expected two hours and is still playing at hour five will not return, and a structure that ends in forty minutes disappoints everyone who travelled to it.