Although the Turnigy appears to be a nice device for measuring current consumption (although I am concerned about the continuous duty cycle aspect of the device), if you are this interested in monitoring your electrical/battery condition, I would place a +/- current meter between the battery and the the Master switch, and incorporate a Volt meter. This way you can monitor if and when your charging source and/or solar panel are able to keep up with the demand or if you are slowly depleting your battery.
The way you have it drawn in your layout, you have know idea if you are consuming battery power or power from the charge and/or solar panel.
There may already be a device on the market similar to the Turnigy that will provide +/- current and volts in one display. The Turnigy does not appear to be a bi-directional device (from what I have interpreted from the instructions.)
Just a thought.........