One thing that might be an issue with potluck is the garbage after. This venue is a vacant office building so I don't know what the situation would be. Anyways we would need Josh and the BOD to chime in on my ideas before we get to excited.
Since it's October, should we make it a Halloween event? We can have costumes and give out candy to the kids that attend. Would people dress up? Also if it's a small group I used to have potluck at BAR events. Just my thoughts.
My fear on old glass tanks.....mine is acrylic. Glad it didn't burst on you. Will redsea sell you a discounted replacement tank? Since you have sump and stand still.