how many cupcakes do I need??

Monika
I am hosting my daughter's 1st birthday party and there are 70 guests 48 adults and rest kids. We have a big 3 tier cake so my question is how many cupcakes and cookies will I need for dessert table. Thus is my 1st time ever hosting any party. Little nervous. We are only having cookies, cake and cupcake for dessert table. Is it enough ?? And how many should I have ?