Share 'Chocolate class'

Hi, I need a small help, I´ve been asked to teach a chocolate class and I was wondering how much chocolate I would need. It will be 10 person, wich I will dived into 5. 2 person group. Each person will make a 30 filled pralines, 30 dipped truffles and 30 marsipan nougat balls dipped in chocolate. How much should I estamate for 2 man group.