It sounds like you've got a great plan in place!

We've talked about disconnecting from the grid entirely but we live in a cold climate and have a lot of overcast/dark days in the winter. Wintertime would tax the batteries and we would end up having to run the generator and use fuel to recharge them quite often in the winter months. We'd like to disconnect, and love knowing that if we need to we can ... we are still trying to find that perfect balance.