ADDing classes

I have been talking to parents and students and i have a few ideas that i would like your response on.
1. Having a Mothers and daughters sewing time.
I am thinking maybe once a month on a Saturday Morning, or a week day Night around 7
which time would work best.?
cost 20.00 for a two hour class.  Each mother and daughter would bring all their supplies and patterns. 
Let me know what you think.