We are doing a cocktail hour before dinner with passed appetizers. How many appetizers do we need? The most recent quote I got from a catering company only had two priced out (two different varieties, and one piece of each per guest). I don't feel like that's enough! Is it? I was thinking at least four different types, with enough for four pieces per person, but I've never done this before and don't want to get way too much food when people will be eating dinner soon afterwards.