You must start your CFO in the home you primarily live in.
1) You can sell cakes directly in other counties in CA. You can’t sell indirectly unless the counties coordinate with each other and agree on it.
2) It’s a little more expensive and complicated, but it’s best to get the Class B up-front if you think you’ll use it in the next year. If you switch from Class A to B, you’ll get charged again.
3) If the cake is unboxed, then you need to have the label separate from the cake and available to the consumer.
4) Yes, you will need to switch to a commercial license with completely different rules, permits, and fees.