i dont know if you have ever been to a "5 guys", but you need to go. simplify the menu and just make great burgers.
wings take a long time to fry. you dont want to start pre cooking your food at all.
since your in the states you should look at suppliers you cant be in 8 places at once.
us foods is decent little over priced. idk if you have roma there but they have best cheeses more pizzeria type foods.