Cory,
40-50 of the guys will be on site Thursday so it makes sense to get them out on the course starting on #1, rather than a shotgun ( particularly for those having never played the course before). The guys arriving Friday morning will be slotted to go out as they and their opponents arrive up to around noon. This will free up the afternoon for more golf - skins games, grudge matches, etc.
Saturday will be a shotgun start after breakfast.