The system in the picture above is 9.1 kWp. We did 4.7 kWh today, 147 for the month so far. I think our worst day was boxing day which was 1.4 kWh.
The question about batteries etc relates to a different planned system though.
Your solarlink is interesting. What inverter is it connected to? I know SMA make a webbox that does similar, but it's pretty expensive.