Having been through something like this in the past that went very badly, a
small bit of advice:

If the impetus for forming a company is protection from liability for the
Annual Conference, form it solely for that purpose.

Leaving it open-ended will bring in everyone's ideas. Many of them will
conflict. That will breed sharp disagreements. With a company in the wings
you have money on the line increasing the negative impacts available here.

Some companies have a very clear singular charter to prevent this and I
recommend constraining this one likewise, so everyone/anyone involved is
aware of and expecting just that one purpose. That will give it clear
direction and improve its chance at success.