I would get the menu, that is where you start and where things go wrong as well. Do not assume anyhting. You need to know about sides, meats, sauces, dessert, appetizer any other food items. Then assuming that the utensils, plates, napkins, cups are all there already, best to make sure. What about keeping things hot, or cold, is that all accounted for?
Not to be the nay sayer, but, if you are planning on charging, and making money, and being in business, learn to do it right. And don't take jobs from others, unless you are willing to do it right, or do it for free. IMO, you are asking professionals (or former professionals, in my case) for their hard earned knowledge, best to do it right and learn how to make money, not just undercut someone else.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."