Also, with the BMV 712 it will have a connector to the positive. Needs energy to run Bluetooth.
I have the temp sensor and that doubles as a temp sensor and positive connection.
If you have purchased those parts, the smart battery sense will work. The probe is better. I have a smart battery sense and it sits on my shelf uninstalled.
Edit: properly paneled, the 100/50 will provide all the power from those four panels.
I think You show 520 watts of panels.