J.L.
While I do not think of a 9:30 start time as the norm I do not think it is too early. On the weekend people to tend to sleep in sometimes but on a normal day they should have their kid at school by that time right? It is also probably nice because they still have the rest of the day to do something. The only issue I could think of is if any of the kids play sports on the weekends they are usually in the morning so that might conflict. So if that would mess you up I would reconsider. Otherwise I say go for it.