I want to use a 10 and a 12 in round pan but I dont know if that will feed 50 to 60 people I thought doing a 12 and 8 in round pan I dont know if that would  serve that many people. help me

AWell, a 12" is 56 servings by its self, a 10" is 38, and an 8" is 24 servings.

A 6" on top of a 10" serves 45

Here is a good serving size chart that I use.

http://www.earlenescakes.com/ckserchart.htm

A

These are just the pans she mentioned she wanted to use. I was thinking she would figure out it was too many, once I told her what they serve ;-)